Improvements to artificial joints, kits, and methods of use

Abstract

An acetabular component of an orthopedic joint prosthesis, comprising: an outer shell for attachment to the acetabulum; a liner at least partially provided within the outer shell to provide a contact surface for a femoral component of the orthopedic joint prosthesis; and an adapter at least partially provided within the outer shell, wherein the liner is at least partially within the adapter. The adapter allows the use of a wider range of liners with the given shell.

Description

Technical Field

[0001] The present disclosure relates to improvements to artificial joints, kits containing them, and methods of using them. The present disclosure relates particularly, but not exclusively, to orthopaedic joint prostheses, such as the acetabular portion thereof.

Background Art

[0002] In orthopaedic applications, a variety of different acetabular cup replacement techniques can be taken. Only some of these are suitable for use in complex acetabular defect surgeries where more traditional shells with fixtures that engage the bone cannot be used successfully. A fully porous shell cemented into a liner provides one such technique. However, a fully porous shell is designed to be complementary to a given size and type of liner to which it is cemented. Thus, the size and position of the liner are restricted with respect to any given shell, and thus such techniques cannot provide the same range of implant sizes and positions as a modular system. It would be beneficial to increase the range of possible sizes and positions through the use of potentially uncemented liners.

Summary of the Invention

Means for Solving the Problems

[0003] According to a first aspect of the present invention, there is provided a component of a prosthesis, the component comprising: an outer shell; a liner provided at least partially within the outer shell and adapted to provide a contact surface for further components of the prosthesis; an adapter provided at least partially within the outer shell, the liner being provided at least partially within the adapter.

[0004] The component may further provide that the acetabular component has an assembled state in which relative joint movement between the adapter and the lateral shell is prevented. The component may further provide that the acetabular component has an assembled state in which relative joint movement between the adapter and the liner is prevented. The component may further provide that the acetabular component has an assembled state in which relative joint movement between the adapter and the lateral shell is prevented, and relative joint movement between the adapter and the liner is prevented in the assembled state.

[0005] The components may be acetabular components. The components may be components of an orthopedic joint prosthesis. The lateral shell may be for attachment to the acetabulum.

[0006] Further components may include, for example, the femoral component of an orthopedic joint prosthesis.

[0007] The adapter may be engaged with the shell. In the engaged state, the adapter may be at least partially within the shell.

[0008] In the engagement state between the shell and the adapter, multiple mounting elements can engage with multiple mounting positions. At least one of the mounting elements and / or mounting positions may be provided on the adapter, for example, the other being provided on the shell.

[0009] All mounting elements may be provided on the adapter. All mounting positions may be provided on the shell. Alternatively, all mounting elements may be provided on the shell, and / or all mounting positions may be provided on the adapter. Each mounting element may correspond to a mounting position. The number of mounting positions may be equal to or greater than the number of mounting elements.

[0010] The adapter may have both a disengaged and engaged state with the shell. In the disengaged state, the adapter may be completely outside the shell.

[0011] In the disengaged state between the shell and the adapter, multiple mounting elements can be disengaged from multiple mounting positions. At least one of the mounting elements and / or mounting positions may be located on the adapter, for example, the other on the shell.

[0012] The adapter may also have transition states between a disengaged state and an engaged state between the shell and the adapter. The adapter may have a first configuration in the transition state and a different second configuration in the engaged state.

[0013] The adapter may have a first configuration when the shell and the adapter are disengaged. Mounting elements or mounting positions on the adapter may have a larger circumferential and / or radial range in the first configuration than in the second and / or third configurations. Mounting elements or mounting positions on the adapter may have the largest circumferential and / or radial range in the first configuration.

[0014] The adapter may have a second configuration in the transition state. The adapter may have a third configuration in the transition state.

[0015] During or in the transition state of the shell and adapter, the circumferential and / or radial ranges of the mounting element and / or mounting position may decrease, for example, to a minimum value. In the engaged state of the shell and adapter, the circumferential and / or radial ranges of the mounting element and / or mounting position may be less than the maximum value and / or greater than the minimum value. The circumferential and / or radial ranges of the mounting element and / or mounting position may decrease from the maximum to a smaller range as the mounting element enters the mounting position.

[0016] The liner may be engaged with the adapter. In the engaged state, the liner may be at least partially inside the adapter.

[0017] In the engaged state of the liner and the adapter, multiple contact elements and / or contact positions may contact multiple contact positions and / or contact elements. At least one of the contact elements and / or contact positions may be provided on the adapter, for example, the other being provided on the liner.

[0018] All contact elements may be located on the adapter. All contact positions may be located on the liner. Alternatively, all contact elements may be located on the liner, and / or all contact positions may be located on the adapter. Each contact element may coincide with a contact position. The number of contact positions may be equal to or greater than the number of contact elements.

[0019] The adapter may have both a disengaged and engaged state with respect to the liner. In the disengaged state, the liner may be completely outside the adapter.

[0020] In the disengaged state between the liner and the adapter, multiple contact elements can be disengaged from multiple contact positions. At least one of the contact elements and / or contact positions may be located on the adapter, while the other, for example, is located on the liner.

[0021] The liner may also have transition states between a disengaged state and an engaged state between the liner and the adapter. The liner may have a first configuration in the transition state and a different second configuration in the engaged state.

[0022] The liner may have a first configuration when the liner and adapter are disengaged. The liner may have a maximum radial range when the liner and adapter are disengaged. The liner may have a second configuration in a transition state. The liner may have a third configuration in a transition state. The liner may have a maximum radial range in a transition state between the liner and adapter. The liner may have a reduced radial range in a transition state between the liner and adapter, for example due to compression of the liner by the adapter. The liner may have a maximum radial range when the liner and adapter are engaged. The liner may have a reduced radial range in a state between the liner and adapter, for example due to compression of the liner by the adapter.

[0023] When the components of the implant are assembled, the outer shell may be in contact with the adapter, and / or the adapter is in contact with the outer shell, and / or the adapter is in contact with the liner, and / or the liner is in contact with the adapter. Contact can prevent relative movement between the adapter and the shell and / or between the liner and the adapter. When the components of the implant are assembled, the outer shell may be compressed by the adapter, and / or the adapter is compressed by the outer shell, and / or the adapter is compressed by the liner, and / or the liner is compressed by the adapter. Compression can prevent relative movement between the adapter and the shell and / or between the liner and the adapter.

[0024] The components of the implant may be in a disassembled state and / or a partially assembled state and / or a fully assembled state.

[0025] The components of the implant may have a disassembled state in which the shell and the adapter are disengaged and the adapter and the liner are disengaged. The components of the implant may have a partially assembled state, in which one of the shell and the adapter or the adapter and the liner is in a disengaged state and the other of the shell and the adapter or the adapter and the liner is in a disengaged state. The components of the implant may have an assembled state in which the shell and the adapter are engaged and the adapter and the liner are engaged.

[0026] In the assembled state of the implant components, the liner may have one or more abutting elements and / or abutting positions that abut against the adapter. The abutting elements and / or abutting positions can prevent relative movement of the liner with respect to another component such as the outer shell and / or the adapter. In the assembled state of the implant components, the adapter may have one or more abutting elements and / or abutting positions that abut against the liner. The abutting elements and / or abutting positions can prevent relative movement of the adapter with respect to another component such as the outer shell and / or the liner. In the assembled state of the implant components, the adapter may have one or more mounting positions and / or mounting elements that engage with the shell. The abutting elements and / or abutting positions can prevent relative movement of the adapter with respect to another component such as the outer shell and / or the liner. In the assembled state of the implant components, the shell may have one or more mounting positions and / or mounting elements that engage with the adapter. The abutting elements and / or positions can prevent relative movement of the outer shell with respect to another part such as the liner and / or the adapter.

[0027] In the assembled state of the implant component, the liner may have a reduced configuration as compared to the partially assembled state and / or the disassembled state. The reduced configuration may be due to one or more compressed portions of the liner, such as portions compressed by an adapter, for example compressed radially inwards. The reduced configuration may be provided evenly around the perimeter of the liner or may be localized. The reduced configuration may prevent relative movement of the liner and / or the outer shell and / or the adapter.

[0028] In the assembled state of the implant component, the adapter may have a reduced configuration as compared to the partially assembled state and / or the disassembled state. The reduced configuration may be due to one or more compressed portions of the adapter, such as portions compressed by a shell, for example compressed radially inwards. The reduced configuration may be provided evenly around the outer perimeter of the adapter or may be localized. The reduced configuration may prevent relative movement of the liner and / or the outer shell and / or the adapter.

[0029] In the assembled state of the implant component, the adapter may have an increased dimension as compared to the partially assembled state and / or the disassembled state. The increased dimension may be due to one or more compressed portions of the adapter, such as portions compressed by a liner, for example compressed radially outwards. The increased dimension may be provided evenly around the inner perimeter of the adapter or may be localized. The increased dimension may prevent relative movement of the liner and / or the outer shell and / or the adapter.

[0030] In the assembled state of the implant components, the shell may have increased dimensions compared to the partially assembled and / or disassembled states. These increased dimensions may result from one or more compressed portions of the shell, such as portions compressed by adapters, such as portions compressed radially outward. The increased dimensions may be evenly distributed around the inner circumference of the shell, or they may be localized. These increased dimensions may prevent relative movement of the liner and / or outer shell and / or adapter.

[0031] In particular, the first general embodiment may offer the following features or options:

[0032] The adapter may include a body element. The adapter may include, for example, a single body element extending from the base section to the perimeter section. The adapter may include an outer shell connection element and / or outer shell connection position located on or within the perimeter section.

[0033] The main body element may define a recess, for example, to receive at least a portion of the liner. The recess may be provided on the distal surface of the adapter. The recess may be a through-opening. The recess may be a cup or other closed shape.

[0034] The recess may have a specified size and / or specified diameter and / or specified depth and / or specified position within the adapter and / or specified recess internal profile for receiving one or more liners. The recess may be provided to receive liners selected from a plurality of liners having one or more different characteristics.

[0035] One or more different properties between liners may be selected from the group including one or more distal properties, one or more distal surface properties, one or more different sizes, one or more different specified positions for the contact surfaces of the liners, and one or more different contact surface profiles.

[0036] One or more different characteristics between liners having cups that define the contact surface may be selected from the group including cup size, cup diameter, cup depth, cup position within the liner, and cup internal profile.

[0037] The outer shell connection elements and / or outer shell connection positions provided on the adapter may be located within or on the periphery section of the adapter. The periphery section of the adapter may be provided by one or more flanges extending from the main body element. The flanges may have a uniform outward extension around the adapter. The flanges may have a non-uniform outward extension around one or more parts of the adapter. A single flange may be provided. The flange may have a distal surface and a proximal surface. The outer shell connection elements and / or outer shell connection positions are located on the proximal surface of the flange.

[0038] The outer shell connection elements and / or outer shell connection positions may be provided at two or more, three or more, or four or more positions. The outer shell connection elements and / or outer shell connection positions may be regularly and / or evenly spaced around the surrounding section.

[0039] In the assembled state, the proximal peripheral surface of the adapter may be aligned with, or in particular, in contact with, the distal surface of the outer shell. In the assembled state, one or more outer shell connection elements and / or outer shell connection positions on the adapter may engage with one or more outer shell connection positions and / or outer shell connection elements on the liner. This contact can prevent relative movement of the liner and / or outer shell and / or adapter.

[0040] One or more or all of the outer shell connection elements and / or one or more portions of the outer shell connection locations may be deformable.

[0041] For example, one or more of the outer shell connection elements provided on the adapter may be profiled to have one or more inclined sides. One or more of the outer shell connection elements may include end faces, for example, a proximal end face if provided on the adapter. One or more of the outer shell connection elements may have neck positions at the joint with the adapter and / or the outer shell, for example. One or more of these surfaces and / or neck positions may be complementary to those of the outer shell connection positions provided to the other of the adapter and / or the outer shell.

[0042] One or more of the outer shell connection elements may be in the form of a pair of fingers extending from the adapter and / or outer shell. One or both of the fingers may be inclined with respect to the surface they extend from, particularly in opposite directions. A deformation-allowing space may also be provided between the fingers. The fingers may be deformable.

[0043] The liner may have a reduced radial range in the engaged state between the liner and the adapter, for example, due to compression of the liner by the adapter.

[0044] In particular, the second general embodiment may offer the following features or options:

[0045] The adapter may include a base element.

[0046] The adapter may include one or more shell mounting elements and / or mounting positions provided on the base element. The adapter may also include one or more liner contact elements and / or one or more liner contact positions provided on one or more arm elements.

[0047] The adapter may include, for example, multiple arm elements extending from a base element.

[0048] One or more of the arm elements may include a base section connected to, for example, a base element. One or more of the arm elements may include an end section, for example, a distal end section. One or more of the arm elements may include a contact element and / or a contact position provided on the end section. One or more of the arm elements may include an intermediate section. The intermediate section may be provided connected to the base section and / or the end section.

[0049] One or more of the arm elements may be curved. One or more of the arm elements may include one or more curved sections. One or more of the arm elements may, when assembled, have a shape complementary to the shape of adjacent parts of the outer shell. One or more of the arm elements may, when assembled, have a shape complementary to the shape of adjacent parts of the liner.

[0050] One or more of the arm elements may, for example, have an outer surface that is complementary to the inner surface of an adjacent portion of the outer shell when assembled, for example, at least partially. One or more of the arm elements may, for example, have an inner surface that is complementary to the outer surface of an adjacent portion of the liner when assembled, for example, at least partially.

[0051] The adapter's arm element may define a substantially hemispherical profile.

[0052] The arm element may be flexible.

[0053] The arm element may bend further radially outward in the transition state compared to the assembled state. The intermediate section of the arm element may provide the bending of the arm element, and / or the base section of the arm element may provide the bending of the arm element. The ends may have some degree of flexibility.

[0054] The adapter may include at least two arm elements. The adapter may include at least three arm elements. The adapter may include at least four arm elements. The adapter may include at least two arm elements. The arm elements may be regularly spaced apart around the adapter. The arm elements may be provided in opposing pairs.

[0055] One or more of the arm elements may be finger-shaped, for example, curved fingers. One or more of the arm elements may be petal-shaped, for example, curved petals.

[0056] The contact elements and / or contact positions provided on the adapter may be located around the distal circumference of the adapter. The contact elements and / or contact positions may extend around at least 10% of the distal circumference of the adapter. The contact elements and / or contact positions may extend around at least 15% of the distal circumference of the adapter. The contact elements and / or contact positions may extend around at least 50% of the distal circumference of the adapter. The contact elements and / or contact positions may extend around at least 80% of the distal circumference of the adapter.

[0057] Contact elements and / or contact positions provided on the adapter may form the distal perimeter of the adapter. The contact elements and / or contact positions may extend around the entire distal perimeter of the adapter, such that adjacent contact elements and / or contact positions contact or overlap each other.

[0058] The adapter may have one or more contact elements and / or contact positions, which may be in contact with an outer shell and / or liner. The adapter may have one or more contact elements and / or contact positions that are pressed or compressed between adjacent portions of the outer shell and adjacent portions of the liner.

[0059] The adapter may include one or more contact elements and / or contact positions that are pressed or compressed between one or more contact positions and / or contact elements on adjacent portions of the outer shell and / or between one or more contact positions and / or contact elements on adjacent portions of the liner.

[0060] The contact elements of the adapter may be pressed or compressed against the mounting positions of the shell and / or liner. The contact positions of the adapter are capable of receiving the mounting elements of the shell and / or liner.

[0061] The liner may have a reduced radial range in the engaged state between the liner and the adapter, for example, due to compression of the liner by the adapter.

[0062] All general embodiments of this disclosure may include the following features and options:

[0063] The adapter may have an outer shell disengagement state and an outer shell engagement state. In the disengagement state, the adapter may be completely outside the outer shell. The adapter may also have an outer shell transition state between the outer shell disengagement state and the outer shell engagement state.

[0064] In particular, the first general embodiment may offer the following features or options:

[0065] The adapter may include, for example, a projection from the base element proximal to the base element. The adapter may provide one or more shell mounting elements and / or mounting positions on the projection. The shell may include an opening to receive at least a portion of the adapter projection. The opening may be open or closed. The projection and the opening, and their features, may be reversed by providing them on the shell and adapter instead.

[0066] Outer shell connection elements and / or outer shell connection locations provided on the outer shell may be located within or on the shell periphery section of the outer shell. The shell periphery section of the outer shell may be provided by the shell periphery surface, particularly the proximal surface. The shell periphery surface may have a uniform outward extension around the outer shell. The shell periphery surface may have a non-uniform outward extension around one or more portions of the outer shell. Outer shell connection elements and / or outer shell connection locations may be located on the distal shell periphery surface.

[0067] The outer shell connection elements and / or outer shell connection positions may be provided at two or more, three or more, or four or more positions. The outer shell connection elements and / or outer shell connection positions may be regularly and / or evenly spaced around the shell perimeter section.

[0068] In the assembled state, the distal shell periphery surface of the adapter may be aligned with, or in particular, in contact with, the proximal surface of the adapter. In the assembled state, one or more outer shell connection elements and / or outer shell connection positions on the outer shell may engage with one or more outer shell connection positions and / or outer shell connection elements on the adapter.

[0069] One or more or all of one or more parts of the outer shell connection elements and / or outer shell connection locations provided by the outer shell may be deformable.

[0070] For example, one or more of the outer shell connecting elements provided on the outer shell may be profiled to have one or more inclined sides. One or more of the outer shell connecting elements may include an inner base surface, for example, a base surface that faces distally when provided on the outer shell. One or more of the outer shell connecting elements may have a neck position or mouth position, for example, at the joint with the shell periphery and / or distal to the inner end face. The neck position or mouth position may have a reduced cross-section compared to the base surface cross-section. These surfaces and / or one or more of the neck position and / or mouth position may be complementary to those of the outer shell connecting positions provided to the other of the adapter and / or outer shell.

[0071] One or more outer shell connection elements and / or outer shell connection locations may be provided within recesses of the outer shell at one or more recess locations. One or more recess locations may be openings, such as through-openings. The openings may be suitable for receiving fastening elements such as screws. Recess locations may be provided at the proximal base of the recess. One or more recess locations may be provided midway between the proximal base of the recess and the periphery of the recess.

[0072] In particular, the second general embodiment may offer the following features or options:

[0073] The adapter may provide one or more shell mounting elements as threaded sections on projections, for example, male threads on projections. The shell may provide one or more mounting positions as female threaded sections on openings, for example, female threads within openings. The projections and openings and their features may be reversed by providing them on the shell and adapter instead.

[0074] The outer shell connection element may include a threaded element on a protruding stem, such as a proximal protruding stem. The adapter connection element may include a threaded element within an opening, such as one that is pressed into or extends through a hole in the outer shell. The outer shell connection element may be located in the center of the adapter, for example on its outer surface. The adapter connection element may be located in the center of the outer shell, for example on the inner base of the outer shell.

[0075] In particular, the third general embodiment may offer the following features or options:

[0076] The adapter may provide one or more shell mounting elements on the projection that are inserted into one or more mounting positions within the shell opening. For example, the projection may include a first cross-sectional portion, a second reduced cross-sectional portion, and a third intermediate cross-sectional portion. The third cross-sectional portion may be adapted to pass through the reduced cross-sectional portion of the shell opening and enter the enlarged cross-sectional portion of the opening. The third cross-sectional portion of the projection and / or the reduced cross-sectional portion of the opening may be deformable, for example, to allow passage. The projection and the opening and their features may be reversed by providing them on the shell and adapter instead.

[0077] The outer shell connection element may include one or more distally facing contact surfaces. The adapter connection element may include one or more proximal facing contact surfaces. The one or more distally facing contact surfaces may, for example, abut against one or more proximal facing contact surfaces in the assembled state.

[0078] The outer shell connecting element may have a first section of a first cross-section. The outer shell connecting element may have a second section of a second cross-section. The second section may be proximal to the first section. The first cross-section may be larger than the second cross-section, for example, in diameter and / or area. The outer shell connecting element may have a third section of a third cross-section. The third section may be proximal to the first section and / or the second section. The third cross-section may be intermediate between the second cross-section and / or the second cross-section, for example, in diameter and / or area. The second cross-section may be smaller than the first cross-section and / or the third cross-section. One or more of the cross-sections may be considered perpendicular to the insertion axis of the adapter into the outer shell.

[0079] The third section may provide one or more distally facing contact surfaces.

[0080] The third section may include one or more flexible elements, such as a stem. Axial space may be provided between the flexible elements. The second section may also contribute to or be part of one or more flexible elements.

[0081] The outer shell connection elements and adapter connection elements may be complementary to each other in the profile across one or more sections or all sections.

[0082] The adapter connection element may house the entire outer shell connection element of the adapter within the outer shell's outer profile. The outer shell connection element may be recessed within the outer shell's outer profile when assembled.

[0083] The adapter connection element may comprise a first shell section of a first shell cross-section. The adapter connection element may comprise a second shell section of a second shell cross-section. The second shell section may be distal to the first shell section. The first shell cross-section may be larger than the second shell cross-section, for example, in diameter and / or area. The adapter connection element may comprise a third shell section of a third shell cross-section. The third shell section may be distal to the first shell section and / or the second shell section. The third shell cross-section may be larger than the second shell cross-section and / or the first shell cross-section, for example, in diameter and / or area. The second shell cross-section may be intermediate in cross-section between the first shell cross-section and / or the third shell cross-section. One or more or all of the cross-sections may be considered perpendicular to the insertion axis of the adapter into the outer shell. The third section may provide one or more distally facing contact surfaces.

[0084] The distal contact surface of the outer shell connection element of the adapter may be provided on one or more deformable elements, such as a stem.

[0085] All general embodiments of this disclosure may include the following features and options:

[0086] The outer shell may comprise one or more sections of porous material. The outer shell may be formed entirely of porous material. The outer shell may be porous in that it mimics cancellous bone. An outer shell formed entirely of porous material can mimic cancellous bone throughout its depth and extension. A single outer shell may be provided.

[0087] The outer shell may have a curved outer surface, for example, part or all of a hemisphere. The outer shell may have a curved inner surface, for example, part or all of a hemisphere. The outer shell may have a shell recess, for example, on the distal side. The shell recess may receive at least a portion of the adapter. The shell recess may receive at least a portion of the liner. The shell recess may have a specified size and / or specified diameter and / or specified depth and / or specified position within the outer shell and / or specified recess internal profile for receiving the adapter.

[0088] The outer shell may have one or more through-holes adapted to work with fasteners, such as screws.

[0089] The liner may have a curved inner surface, for example, part or all of a hemisphere.

[0090] A single liner may be provided.

[0091] The liner contact surface may provide a support surface for another component of the prosthesis.

[0092] The first aspect of this disclosure may include any of the features, options, or possibilities described elsewhere in this specification, including other aspects of this disclosure.

[0093] According to a second aspect of this disclosure, a kit of surgical components is provided. The prosthesis has components, and the components are, Outer shell and Multiple liners, wherein at least one of the liners has one or more characteristics that are different from another of the liners, Equipped with an adapter, Multiple liners are fitted to be at least partially provided within the outer shell and are fitted to provide contact surfaces for further components of the prosthesis. The adapter is adapted to be at least partially located within the outer shell, and one of the liners is at least partially located within the adapter.

[0094] The kit can provide acetabular components that are assembled, in which relative joint movement between the adapter and the lateral shell is prevented. The kit can provide acetabular components that are assembled, in which relative joint movement between the adapter and the liner is prevented. The kit can provide acetabular components that are assembled, in which relative joint movement between the adapter and the lateral shell is prevented, and in which relative joint movement between the adapter and the liner is prevented.

[0095] The components may be acetabular components. The components may be components of an orthopedic joint prosthesis. The lateral shell may be for attachment to the acetabulum. Further components may be, for example, femoral components of an orthopedic joint prosthesis.

[0096] One or more different properties between the liners may be that one or more liners are cement-bonded liners, and one or more liners are non-cement-bonded liners, in particular, that one or more are unchanged cement-bonded liners and one or more unchanged non-cement-bonded liners.

[0097] Non-cemented liner types may have one or more connection locations and / or connection elements. The connection locations and / or connection elements may be separate portions extending from the rest of the liner and / or separate portions recessed relative to the rest of the liner. The connection locations and / or connection elements may be existing components for cooperating with the outer shell, or they may be repurposed for cooperating with the adapter. The connection locations may be abutment locations and / or abutment elements. The connection locations may be existing abutment locations and / or abutment elements for cooperating with abutment elements and / or abutment locations on the outer shell, which are repurposed to cooperate with the abutment elements and / or abutment locations of the adapter.

[0098] A cement-bonded liner may lack connection points and / or connection elements. A cement-bonded liner may lack separate portions extending from the rest of the liner and / or connection points and / or connection elements recessed to the rest of the liner.

[0099] One or more different properties between liners may be selected from the group including one or more distal properties, one or more distal surface properties, one or more different sizes, one or more different specified positions for the contact surfaces of the liners, and one or more different contact surface profiles.

[0100] One or more different characteristics between liners having cups that define the contact surface may be selected from the group including cup size, cup diameter, cup depth, cup position within the liner, and cup internal profile.

[0101] The liner may have the same properties with respect to several characteristics, for example, the proximal characteristics.

[0102] The kit may further comprise one or more additional outer shells, at least one of which has one or more shell properties that are different from another of the outer shells. The kit may further include one or more different properties between the outer shells such that one or more outer shells are cemented outer shells and one or more outer shells are not cemented outer shells.

[0103] An outer shell that is not cemented may have one or more connection locations and / or connection elements. The connection locations and / or connection elements may be separate portions extending from the rest of the outer shell and / or separate portions recessed into the rest of the outer shell. The connection locations and / or connection elements may be existing parts for working with the liner, or they may be repurposed for working with the adapter. The connection locations may be mounting locations and / or mounting elements. The connection locations may be existing mounting locations and / or mounting elements for working with mounting elements and / or mounting locations on the liner that are repurposed for working with the adapter's mounting elements and / or mounting locations.

[0104] A cemented outer shell may lack connection points and / or connection elements. A cemented outer shell may lack connection points and / or connection elements that are recessed into the rest of the outer shell and / or separate portions extending from the rest of the outer shell.

[0105] A cemented outer shell may be an outer shell adapted to be fixed to the patient by cement. A non-cemented outer shell may be an outer shell adapted to be fixed to the patient by means other than cement, for example, by one or more bone fixation devices.

[0106] The non-cemented shell may have one or more mounting locations, such as fastener mounting locations. One or more fastener mounting locations may be openings and / or slots extending through the non-cemented shell. One or more fastener mounting locations may, in use, receive fasteners such as screws and / or nails and / or pins. The fixation may be bone-engagement fixation. One or more fastener mounting locations may, for example, have an extended profile section to receive the head portion of the fixation in use.

[0107] The cemented shell may lack mounting locations, potentially fastener mounting locations, such as openings or slots extending through the cemented shell.

[0108] A cemented shell may have one or more cement contact surfaces. The cemented shell may interact physically and / or chemically with the cement it comes into contact with.

[0109] One or more different outer shell characteristics may be selected from the group including one or more distal characteristics, one or more distal surface characteristics, one or more different sizes, one or more different internal profiles, one or more different internal adapter contact surface profiles, one or more proximal characteristics, one or more proximal surface characteristics, one or more surface coatings or surface materials, and one or more materials.

[0110] The kit may further comprise one or more additional adapters, at least one of which has one or more adapter characteristics that are different from another of the adapters. The one or more different adapter characteristics may be selected from the group including one or more distal characteristics, one or more distal surface characteristics, one or more different sizes, one or more different internal profiles, one or more different internal liner contact surface profiles, one or more proximal characteristics, one or more proximal surface characteristics, one or more different external profiles, one or more different external outer shell contact surface profiles, and one or more materials.

[0111] The kit may further comprise one or more femoral components and / or one or more surgical instruments. The femoral components may comprise one or more stems and / or one or more heads.

[0112] A second aspect of this disclosure may include any of the features, options, or possibilities described elsewhere in this specification, including other aspects of this disclosure.

[0113] A third aspect of this disclosure provides a method for assembling components of a prosthesis, the method being: Obtaining the adapter, liner, and outer shell, Insert the liner into the adapter, This includes inserting the adapter into the outer shell, The components are, Outer shell and A liner provided at least partially within the outer shell and adapted to provide contact surfaces for further components of the prosthesis, The present invention comprises an adapter, at least partially provided within an outer shell, wherein a liner is at least partially provided within the adapter.

[0114] The method may further provide an assembled acetabular component in which relative joint movement between the adapter and the lateral shell is prevented. The method may further provide an assembled acetabular component in which relative joint movement between the adapter and the liner is prevented. The method may further provide an assembled acetabular component in which relative joint movement between the adapter and the lateral shell is prevented, and relative joint movement between the adapter and the liner is prevented.

[0115] The method may include components that are acetabular components. The components may be components of an orthopedic joint prosthesis. The lateral shell may be for attachment to the acetabulum. Further components may be, for example, femoral components of an orthopedic joint prosthesis.

[0116] This method may include selecting a liner from among several liners, wherein at least one of the liners has one or more different properties from another of the liners. The one or more different properties between the liners may be that one or more liners are cemented liners, and one or more liners are not cemented liners, in particular, unmodified cemented type liners and unmodified non-cemented type liners.

[0117] Non-cemented liner types may have one or more connection locations and / or connection elements. The connection locations and / or connection elements may be separate portions extending from the rest of the liner and / or separate portions recessed relative to the rest of the liner. The connection locations and / or connection elements may be existing components for cooperating with the outer shell, or they may be repurposed for cooperating with the adapter. The connection locations may be abutment locations and / or abutment elements. The connection locations may be existing abutment locations and / or abutment elements for cooperating with abutment elements and / or abutment locations on the outer shell, which are repurposed to cooperate with the abutment elements and / or abutment locations of the adapter.

[0118] A cement-bonded liner may lack connection locations and / or connection elements. A cement-bonded liner may lack separate portions extending from the rest of the liner and / or connection locations and / or connection elements recessed to the rest of the liner. The method may include selecting an outer shell from a plurality of outer shells, at least one of the outer shells having one or more outer shell characteristics that are different from another of the outer shells.

[0119] The method may include selecting an adapter from among several adapters, wherein at least one of the adapters has one or more adapter characteristics that are different from another of the adapters.

[0120] The assembly method may be provided as part of a surgical procedure. The surgical procedure may include, for example, preparing a site for the outer shell on the acetabulum. The surgical procedure may include attaching the outer shell to the patient. The surgical procedure may also include attaching the adapter and liner to the outer shell. The procedure may include cementless attachment of the adapter and liner to the outer shell.

[0121] The assembly method may include inserting the liner into the adapter. The method may also include insertion being performed through relative axial movement of the liner and the adapter.

[0122] The method may include inserting the adapter into the outer shell.

[0123] The method may include the liner being inside the adapter when the adapter is inserted into the outer shell. The method may include the insertion being performed through axial movement of the liner and / or adapter relative to the outer shell. The method may include the insertion being performed through rotational movement of the liner and / or adapter relative to the outer shell.

[0124] The assembly method does not require the use of cement. The assembly method does not require the use of cement to connect the outer shell to the adapter. The assembly method does not require the use of cement to connect the adapter to the liner. The assembly method does not require the use of cement to connect the outer shell to the adapter and the liner. The assembly method does not require the use of cement to connect the liner to the adapter and / or the outer shell. The assembly method does not require the use of cement in contact with the distal side of the outer shell and / or the proximal side of the adapter and / or the distal side of the adapter and / or the proximal side of the liner and / or the distal side of the liner. The method may include cement provided in contact with the proximal side of the outer shell.

[0125] The method may further include the use of one or more additional outer shells, at least one of which has one or more shell properties different from another of the outer shells. The method may further include the use of one or more different properties among the outer shells, in that one or more outer shells are cemented outer shells and one or more outer shells are not cemented outer shells.

[0126] An outer shell that is not cemented may have one or more connection locations and / or connection elements. The connection locations and / or connection elements may be separate portions extending from the rest of the outer shell and / or separate portions recessed into the rest of the outer shell. The connection locations and / or connection elements may be existing parts for working with the liner, or they may be repurposed for working with the adapter. The connection locations may be mounting locations and / or mounting elements. The connection locations may be existing mounting locations and / or mounting elements for working with mounting elements and / or mounting locations on the liner that are repurposed for working with the adapter's mounting elements and / or mounting locations.

[0127] A cemented outer shell may lack connection points and / or connection elements. A cemented outer shell may lack connection points and / or connection elements that are recessed into the rest of the outer shell and / or separate portions extending from the rest of the outer shell.

[0128] A cemented outer shell may be an outer shell adapted to be fixed to the patient by cement. A non-cemented outer shell may be an outer shell adapted to be fixed to the patient by means other than cement, for example, by one or more bone fixation devices.

[0129] The non-cemented shell may have one or more mounting locations, such as fastener mounting locations. One or more fastener mounting locations may be openings and / or slots extending through the non-cemented shell. One or more fastener mounting locations may, in use, receive fasteners such as screws and / or nails and / or pins. The fixation may be bone-engagement fixation. One or more fastener mounting locations may, for example, have an extended profile section to receive the head portion of the fixation in use.

[0130] The cemented shell may lack mounting locations, potentially fastener mounting locations, such as openings or slots extending through the cemented shell.

[0131] A cemented shell may have one or more cement contact surfaces. The cemented shell may interact physically and / or chemically with the cement it comes into contact with.

[0132] A third aspect of this disclosure may include any of the features, options, or possibilities described elsewhere in this specification, including other aspects of this disclosure.

[0133] A fourth aspect of this disclosure provides a method for implanting components of a prosthesis, the method being: Obtaining the adapter, liner, and outer shell, Insert the liner into the adapter, This includes inserting the adapter into the outer shell, This includes implanting an adapter, liner, and outer shell into the surgical site, The components are, Outer shell and A liner provided at least partially within the outer shell and adapted to provide contact surfaces for further components of the prosthesis, The present invention comprises an adapter, at least partially provided within an outer shell, wherein a liner is at least partially provided within the adapter.

[0134] The method may further provide an assembled acetabular component in which relative joint movement between the adapter and the lateral shell is prevented. The method may further provide an assembled acetabular component in which relative joint movement between the adapter and the liner is prevented. The method may further provide an assembled acetabular component in which relative joint movement between the adapter and the lateral shell is prevented, and relative joint movement between the adapter and the liner is prevented.

[0135] The method may include components that are acetabular components. The components may be components of an orthopedic joint prosthesis. The lateral shell may be for attachment to the acetabulum. Further components may be, for example, femoral components of an orthopedic joint prosthesis.

[0136] This method may include selecting a liner from among several liners, wherein at least one of the liners has one or more different properties from another of the liners. The one or more different properties between the liners may be that one or more liners are cemented liners, and one or more liners are not cemented liners, in particular, unmodified cemented type liners and unmodified non-cemented type liners.

[0137] Non-cemented liner types may have one or more connection locations and / or connection elements. The connection locations and / or connection elements may be separate portions extending from the rest of the liner and / or separate portions recessed relative to the rest of the liner. The connection locations and / or connection elements may be existing components for cooperating with the outer shell, or they may be repurposed for cooperating with the adapter. The connection locations may be abutment locations and / or abutment elements. The connection locations may be existing abutment locations and / or abutment elements for cooperating with abutment elements and / or abutment locations on the outer shell, which are repurposed to cooperate with the abutment elements and / or abutment locations of the adapter.

[0138] A cement-bonded liner may lack connection locations and / or connection elements. A cement-bonded liner may lack separate portions extending from the rest of the liner and / or connection locations and / or connection elements recessed to the rest of the liner. The method may include selecting an outer shell from a plurality of outer shells, at least one of the outer shells having one or more outer shell characteristics that are different from another of the outer shells.

[0139] The method may include selecting an adapter from among several adapters, wherein at least one of the adapters has one or more adapter characteristics that are different from another of the adapters.

[0140] The surgical procedure may include, for example, preparing a site for the lateral shell on the acetabulum. The surgical procedure may include attaching the lateral shell to the patient. The surgical procedure may also include attaching the adapter and liner to the lateral shell. The procedure may include cementless attachment of the adapter and liner to the lateral shell.

[0141] The method may include inserting the liner into the adapter. Insertion may be performed through relative axial movement of the liner and the adapter.

[0142] The method may include inserting the adapter into the outer shell.

[0143] The method may include the liner being within the adapter when the adapter is inserted into the outer shell. The method may include the insertion being performed through axial movement of the liner and / or adapter relative to the outer shell. The method may include the insertion being performed through rotational movement of the liner and / or adapter relative to the outer shell.

[0144] The method does not require the use of cement in implantation. The method does not require the use of cement to connect the outer shell to the adapter. The method does not require the use of cement to connect the adapter to the liner. The method does not require the use of cement to connect the outer shell to the adapter and the liner. The method does not require the use of cement to connect the liner to the adapter and / or the outer shell. The method does not require the use of cement in contact with the distal side of the outer shell and / or the proximal side of the adapter and / or the distal side of the adapter and / or the proximal side of the liner and / or the distal side of the liner. The method may include cement provided in contact with the proximal side of the outer shell.

[0145] The method may further include the use of one or more additional outer shells, at least one of which has one or more shell properties different from another of the outer shells. The method may further include the use of one or more different properties among the outer shells, in that one or more outer shells are cemented outer shells and / or one or more outer shells are not cemented outer shells.

[0146] An outer shell that is not cemented may have one or more connection locations and / or connection elements. The connection locations and / or connection elements may be separate portions extending from the rest of the outer shell and / or separate portions recessed into the rest of the outer shell. The connection locations and / or connection elements may be existing parts for working with the liner, or they may be repurposed for working with the adapter. The connection locations may be mounting locations and / or mounting elements. The connection locations may be existing mounting locations and / or mounting elements for working with mounting elements and / or mounting locations on the liner that are repurposed for working with the adapter's mounting elements and / or mounting locations.

[0147] A cemented outer shell may lack connection points and / or connection elements. A cemented outer shell may lack connection points and / or connection elements that are recessed into the rest of the outer shell and / or separate portions extending from the rest of the outer shell.

[0148] A cemented outer shell may be an outer shell adapted to be fixed to the patient by cement. A non-cemented outer shell may be an outer shell adapted to be fixed to the patient by means other than cement, for example, by one or more bone fixation devices.

[0149] The non-cemented shell may have one or more mounting locations, such as fastener mounting locations. One or more fastener mounting locations may be openings and / or slots extending through the non-cemented shell. One or more fastener mounting locations may, in use, receive fasteners such as screws and / or nails and / or pins. The fixation may be bone-engagement fixation. One or more fastener mounting locations may, for example, have an extended profile section to receive the head portion of the fixation in use.

[0150] The cemented shell may lack mounting locations, potentially fastener mounting locations, such as openings or slots extending through the cemented shell.

[0151] A cemented shell may have one or more cement contact surfaces. The cemented shell may interact physically and / or chemically with the cement it comes into contact with.

[0152] A fourth aspect of this disclosure may include any of the features, options, or possibilities described elsewhere in this specification, including other aspects of this disclosure. [Brief explanation of the drawing]

[0153] [Figure 1] This is a schematic diagram of a kit according to a general embodiment of the present disclosure, showing the shell, a series of different liners, and an adapter. [Figure 2a] This is a perspective side view of the adapter and shell according to a first detailed embodiment of the present disclosure. [Figure 2b] This is a side cross-sectional view of implant 1 in a partially assembled form, showing the adapter 100 and the selected liner 5 positioned within the adapter 100. [Figure 2c] This is a side cross-sectional view showing the adapter 100 engaged with the shell 3, with the adapter 100 sandwiched between the shell 3 and the liner 5. [Figure 3] This is a side detail view of the locking element of a modified embodiment of the adapter. [Figure 4] This is a schematic diagram of a kit according to a second general embodiment of the present disclosure, showing a shell, a series of different liners, and an adapter. [Figure 5a] This is a perspective view of the shell and adapter according to a second detailed embodiment of the present disclosure. [Figure 5b] Figure 5a is a cross-sectional side view of the adapter only. [Figure 5c] Figure 5b is a plan view of the adapter only. [Figure 5d] Figure 5a is a cross-sectional side view of the shell, adapter, and selected liner in their assembled state. [Figure 5e] Figure 5a is a cross-sectional side view of the shell and adapter, each with a different selected liner. [Figure 5f] Figure 5a is a cross-sectional side view of the shell and adapter with a different selected liner. [Figure 6a] This is a plan view of the adapter according to the first modification of the second detailed embodiment. [Figure 6b] This is a detailed side view of the arm in a second modified example of the second detailed embodiment. [Figure 7] This is a detailed plan view of the arm in a third modification of the second detailed embodiment. [Figure 8a] Two positions of detailed parts around the adapter, according to a fourth modification of the second detailed embodiment. [Figure 8b] Two positions of detailed parts around the adapter, according to a fourth modification of the second detailed embodiment. [Figure 9] This is a cross-sectional side view of the adapter according to a third detailed embodiment connected to the base of the shell. [Modes for carrying out the invention]

[0154] In orthopedic applications, various different acetabular cup replacement techniques can be employed. Only a few of these are suitable for use in complex acetabular defect surgeries where more traditional shells with bone-engaging fixators cannot be used effectively. A fully porous shell with a cemented liner offers one such technique. However, a fully porous shell is designed to be complementary to a given size and type of liner cemented to it. Thus, the liner material, liner size and position, and potentially other properties are constrained for any given porous shell, and therefore, such a technique cannot offer an implant size and position range as large as that of a modular system. For any given modular system shell of any size, a much wider variety of liners made from different materials, with different sizes, different cup positions, etc., are already available.

[0155] Modular liners can achieve this deformation, but they are designed for conventional shells that use fasteners to attach them and do not use cement between the shell and the liner.

[0156] Currently, there is no way to securely attach the liner of a modular system to a porous shell, and it is currently intended only for use with cemented-type liners. Therefore, there are limitations to the user's freedom to choose different bearing styles and / or materials, for example, to restore the hip joint.

[0157] Porous shells are beneficial for internal bone growth, and fully porous shells attempt to mimic cancellous bone throughout. Other porous shells only have a porous coating on the outer, proximal surface and therefore do not mimic the entire shell.

[0158] Not only would this be useful in hip joint implant systems, similar improvements would also be beneficial in enabling the attachment of modular components in cage-type implants.

[0159] A common feature of cemented shells and their liners is that the cement provides the attachment between them, and therefore, no other form of attachment location or attachment element is pre-existing on the shell or liner.

[0160] This disclosure provides an adapter for use between a porous shell and any type of liner within an implant, enabling a wider range of liners to be used with a given shell. While suitable for use in porous shell and liner-based implants, this disclosure allows a given porous shell to function well with a variety of different liners and potentially accommodate modular liners as well as previously cemented liners. These forms are available for both unmodified cemented and unmodified non-cemented liners, both of which are currently used in non-cemented embedded configurations. This provides a wider range of treatment options.

[0161] In other embodiments, the technique is used in conjunction with a cage and other types of implants to provide similar flexibility.

[0162] Figure 1 shows a kit according to the present disclosure, in particular a kit of the type that uses the shell 3 and adapter 100, which are shown in more detail in Figure 2. This kit is used to provide an overall implant 1 formed from the shell 3 and adapter 100 in combination with a single liner 5 selected from a group of liners 5, 5' and 5'' of different diameters. Three liners are shown, namely liner 5 with a diameter of 50 mm, liner 5' with a diameter of 52 mm, and liner 5'' with a diameter of 54 mm, but a greater number of liners 5, or two liners 5, 5', may be included in the kit.

[0163] The porous shell 3 has mounting positions 7 on its distal surface 9. The distal surface 9 surrounds a dish-shaped recess 11. The dish-shaped recess 11 is configured to receive the body 13 of the adapter 100. The adapter 100 has a periphery flange 15 having a proximal surface 17 and a distal surface 19. In the assembled state, at least a portion of the proximal surface 17 of the adapter 100 abuts against at least a portion of the distal surface 9 of the shell 3. The proximal surface 17 of the adapter 100 is provided with a series of mounting elements 21.

[0164] The adapter 100 has a recess 23 on its distal surface 19. The recess 23 has a specified size [such as diameter and / or depth], a specified location within the adapter 100 [and thus the entire shell 3 and implant 1], and a specified cup internal profile [for example, a hemispherical or tapered truncated cone as shown in Figure 1]. The recess or cup 23 receives the selected liner 5.

[0165] The kit includes liner 5 and a set of other liners 5', 5'', etc., that differ from liner 5 in one or more properties. These properties are typically distal properties, e.g., different defined sizes [larger diameter and / or deeper depth to accommodate larger balls on different implants], and / or different specified locations within liner 5 [non-centered locations], and / or different specified cup internal profiles [e.g., not a purely hemispherical profile]. Typically, the existing range of modular liners [non-cemented type], each offering variations in such properties, is greater than the range of configured cemented type liners. Alternatively or additionally, the properties may also be generally proximal properties and / or properties relating to the interaction between liners 5, 5', 5'', etc., and adapter 100. Typically, existing non-cemented type liners may include connection locations and / or connection elements intended to work with the outer shell of the original design, but which may now be used alternatively to work with the adapter. In contrast, existing liners intended for cemented use typically lack such separate elements and rely on cement to hold them within the outer shell.

[0166] The adapters disclosed herein provide a contact engagement instead of cement for cement-type liners (without requiring modification of those liners), and also use the same contact engagement to hold non-cement-bonded liners (again, without requiring modification), and furthermore, they feature connection positions and / or connection elements.

[0167] As a result of the kit, a given shell 3 can be optionally combined with any of the liners 5, 5', 5'', etc., and thus change the entire implant 1.

[0168] A single adapter 100 may be used, as shown in Figure 1, but the kit may include several adapters 100, 100', 100'', etc., and the number of adapters is substantially less than the number of liners 5 in the same kit.

[0169] If two or more adapters 100 are provided, the adapters may have one or more non-common characteristics. These characteristics are generally distal characteristics, e.g., different defined sizes [such as larger diameters and / or deeper depths to accommodate larger balls on different implants], and / or different specified positions within the adapter 100 [such as non-central positions], and / or different specified cup internal profiles [e.g., not purely hemispherical profiles].

[0170] If two or more adapters 100 are provided, the adapters may have one or more common characteristics. Common characteristics may include a peripheral flange 15, such as its proximal surface 17, having a common profile and / or size and / or range. Common characteristics may include, for example, the properties and / or size and / or shape and / or profile of the body 13 of the adapter 100, such as ensuring a secure fit within the shell 3. Common characteristics may also include the properties and / or size and / or shape and / or profile and / or position of the mounting position 7 and the mounting element 21.

[0171] As shown in Figure 1, only a single shell 3 is shown for simplicity, but the kit disclosure generally includes a set of different shells 3 that differ from each other with respect to one or more shell properties. These may be distal shell properties such as the properties and / or size and / or shape and / or profile of the distal side or part thereof of the shell, and / or proximal shell properties such as the properties and / or size and / or shape and / or profile of the proximal side or part thereof of the shell, and / or one or more properties of the porous coating on the shell 3 and / or the external shape of the shell 3. As a result, a wide variety of different shells 3, potentially different adapters 100, and different liners 5, 5', 5'', 5'''', 5'''', etc. can be combined while retaining the advantages of the porous shell 3 type design.

[0172] Referring to Figure 2a, a shell 3 and adapter 100 suitable for use in such a general kit are shown. In Figure 2b, the adapter 100 and the selected liner 5 are shown in a partially assembled form of the implant 1. In Figure 2c, the adapter 100 engages with the shell 3, and the adapter 100 is sandwiched between the shell 3 and the liner 5, giving the implant 1 an assembled form.

[0173] This first detailed embodiment provides a porous shell 3 having an outer proximal surface 23 with a porous coating, as known in the art. Four equally spaced, coincident profile mounting positions 7 are recessed into the distal surface 9 of the shell 3. The distal surface 9 surrounds a dish-shaped recess 11. The dish-shaped recess 11 is configured to receive the body 13 of the adapter 100 (disconnected from the shell 3 but shown aligned with the shell 3). The shell 3 and mounting positions 7 can be readily formed by a 3D printing process.

[0174] The mounting positions within the dish-shaped recess 11 can also be used alternatively or additionally. For example, the mounting positions can be provided on the base of the shell 3 using openings from one or more openings provided in the shell 3 for the possibility of use with a fastener. Figure 9 shows such use.

[0175] Mounting position 7 has an opening 25 and a base 27. The opening 25 is connected to the base 27 by two inclined surfaces 29a and 29b. The inclined surfaces 29a and 29b are flared outwards from the opening 25 and from each other, so that the base cross-section is larger than the cross-section of the opening.

[0176] The adapter 100 has a periphery flange 15 having a proximal surface 17 and a distal surface 19. In the assembled state, the proximal surface 17 of the adapter 100 is aligned with and in contact with the distal surface 9 of the shell 3. A smooth continuity is provided between the adjacent portion 31 of the outer proximal surface 23 of the shell 3 and the further adjacent portion 33 of the outer surface 34 of the adapter 100.

[0177] A series of mounting elements 21 are provided on the proximal surface 17 of the adapter 100. During the transition from the disassembled state (Figure 2) to the assembled state, the mounting elements 21 are aligned with their respective mounting positions 7, and compressive forces are applied so that each edge 35a, 35b of the mounting elements 21 deforms upon contact with the edges 37a, 37b of the distal surface 9 of the shell 3. Further compression causes further deformation until the mounting elements 21 snap into place at the mounting positions 7. Each mounting element 21 is contoured with a proximal surface 39 and inclined sides 41a, 41b leading to the neck position 43. These surfaces and positions are complementary to the surface and position of the mounting position 7 of the shell 3, at least with respect to the contact surface, and thus provide a firm fixation between the porous shell 3 and the adapter 100.

[0178] Referring to Figure 2b, the liner 5 is selected from a set of different liners such as 5', 5'', etc., for use when forming the implant 1. The liner 5 is inserted into the recess 23 of the adapter 100. The gap in Figure 2c is exaggerated, and the outer surface 300 of the liner 5 is close to or in contact with the inner surface 302 of the recess 23. In this configuration, little or no compression of the liner 5 by the adapter 100 may occur. The adapter 100 has a distal surface 17, a proximal surface 19, and a mounting element 21.

[0179] In Figure 2c, the partially assembled implant 1 is modified into a fully assembled implant 1 by inserting the adapter 100, which carries the liner 5, into the shell 3. The type of engagement between the adapter 100 and the shell 3 is described in detail above with reference to Figure 2a. The surface 304 defining the dish-shaped recess 11 of the shell 3 abuts with the outer surface 306 of the adapter 100 at the abutment position. The inner surface 302 of the adapter 100 abuts with the outer surface 300 of the liner 5 at the abutment position. The abutment can cause the liner 5 to compress the adapter 100 and / or the adapter 100 to slightly compress the liner. Compression of the outer surfaces of the shell 3 and / or adapter 100 may also occur. The abutment, potentially involving compression, provides a firm positioning of the liner 5 within the adapter 100. The adapter 100 is also firmly fixed to the shell 3.

[0180] Therefore, as explained above, the connection of the liner 5 to the adapter 100 is mechanical and achieved by contact. This works for non-cemented liners even if no engagement occurs between the adapter and the connection point and / or connection element provided by the liner. Such connections have previously been used for direct engagement between the liner and the outer shell. This mechanical interaction is important in the context of liners previously designed for cemented applications, as there is no cement used to provide fixation within the typical porous shell and liner. Nevertheless, cemented liners are held firmly in place. As will be explained below, the adapter can be well adapted in combination with the outer shell to hold liners of different external dimensions without using connection elements and / or connection points.

[0181] An alternative modification of the mounting element 21 is shown in Figure 3. In this modification, the mounting element 21 is provided with a central wedge-shaped recess 45, which is not present in the type of mounting element 21 shown in Figure 2. This provides greater flexibility for the mounting element 21 during the transition from the disassembled to the assembled state. The mounting element 21, like other mounting elements not shown, comprises a proximal surface 39 (divided into two parts) and inclined sides 41a, 41b leading to a neck position 43. These surfaces and positions are complementary to the surfaces and positions of the mounting position 7 of the shell 3, at least with respect to the contact surface, and thus provide a firm fixation between the porous shell 3 and the adapter 100. The mounting position 7 of the shell 3 in this modification may have the same profile as shown in Figure 2, but alternatively, it may have some modification, such as a projection into the central wedge-shaped recess 45 (not shown), particularly with respect to the profile of the base 27.

[0182] Figure 4 is a schematic diagram of a kit according to a second general embodiment of the present disclosure. In this case as well, the kit features a shell 3 and a liner 5 together with the adapter 100. The shell 3 and liner 5 may be of the type shown in detail in Figures 5d, 5e, and 5f. The adapter 100 may be of the type shown in detail in Figures 5a, 5b, 5c, 5d, 5e, and 5f. Similar to the liner 5 having a first outer diameter of 52 mm, the kit includes at least one other liner. In this case, a liner 5' having an outer diameter of 54 mm and a liner 5'' having an outer diameter of 56 mm are provided. The liners 5, 5', and 5'' are oriented 180° compared to their orientation when inserted into the adapter 100 and shell 1. o It is shown rotated.

[0183] The adapter 100 is positioned between the shell 3 and the liner 5 in the assembled state shown in Figure 5d and during assembly shown in Figure 5a. The adapter 100 is received in a dish-shaped recess 11 of the shell 3. The adapter 100 has a central space 102 into which the liner 5 is received. Generally, the adapter 100 engages with the shell 3 via mounting elements / positions of the base, which may have contact positions / elements at its distal end, and engages with the liner 3 via contact positions / elements of the liner, firmly fixing the three parts together and providing a firmly assembled implant 1.

[0184] The single adapter 100 provides the ability to successfully mount a wider range of liners 5 to a given shell 3 than would be possible with liners directly mounted to the shell. Thus, in the illustrated embodiment, the shell 3 can successfully accommodate a selection from, for example, several liners 5, 5', 5'', and 5'''' through the use of the single adapter 100. Different liners 5, 5', and 5'' can be accommodated by the single adapter 100, since their end sections 126 can be spaced differently from one another within the gap 75, as shown in Figures 5d, 5e, and 5f.

[0185] If the kit includes a second different adapter, as anticipated, this can also allow the shell 3 to successfully accommodate, for example, further different liners. Adding yet another different adapter to the kit makes it possible to use an even wider range of liners. Adapter 100 can be accommodated so that they overlap within the range of liners that can be adapted. Thus, liners of fourth and subsequent sizes may be accommodated in adapter 100 and a larger adapter, but liners 5, 5' and 5'' will not be accommodated in that larger adapter, and so on.

[0186] Similar to the embodiment in Figure 1 above, only a single shell 3 is shown in Figure 4 for simplicity, but the kit disclosure generally includes a set of different shells 3 that differ from each other with respect to one or more shell characteristics. Thus, by using adapters and potentially different adapters, the range of shells and liners that can be mated within the shells is broadened.

[0187] Figure 4 shows a porous shell 3 and liner 5 of a type that can accommodate the adapter 100 shown in Figures 5a, 5b, and 5c.

[0188] Compared to conventional porous shells, shell 3 has an opening 102 provided in the base 104 of the dish-shaped recess 11. The opening 102 may be added or modified to provide a threaded section 108 as part of the shell connection position 110, and a mounting position / element.

[0189] As best seen in Figures 5d, 5e, and 5f, compared to the operation of a conventional liner cemented to a shell, the liner 5 has a series of contact positions 407 provided on the outer surface 35 of the liner 5. These contact positions 407 cooperate with the contact positions or elements 21 with end sections 126 provided by the adapter 100 in Figure 5b.

[0190] When a cement-bonded liner is modified compared to its existing form, the abutment position 407 may be in the form of a mounting position provided by a peripheral open slot with an inner surface, a side surface, and a base surface facing proximal. The mounting position 407 has the same profile in each case. Such abutment position 407 can improve the retention of the liner 5 in the adapter 100 and thus in the shell 3.

[0191] Otherwise, as shown in Figure 5d, the shell 3 and liner 5 may not need to be modified from the existing porous shell and cemented liner design, and the inner surface 200 of the end section 126 on the mounting element 21 of the adapter 100 simply abuts against the tapered surface 202 on the outer surface 204 of the liner 5 near the distal side 206 of the liner 5. The outer surface 208 of the end section 126 abuts against the inner circumferential section 210 of the shell 100. A solid engagement for the shell 3, adapter 100, and liner 5 is thus provided.

[0192] Alternative contact positions 407 are provided by liner 5' in Figure 5e and liner 5'' in Figure 5f.

[0193] In the configuration of Figure 5e, the liner 5' has a contact position 407 similar to the contact position in Figure 5d where the liner shell 3, adapter 100, and liner 5' abut, but also has an additional contact position 407' on the liner 5'. The additional contact position 407' is provided by an annular ring 212 that extends around the outer surface 204 of the liner 5' and protrudes therefrom. The distal surface 214 of the annular ring 212 cooperates with the inner proximal surface 216 of the mounting element 21 of the adapter 100 to provide a contact and restraining surface.

[0194] In the configuration shown in Figure 5f, the liner 5'' has the mounting method shown in Figure 5e, but the liner 5'' is smaller than the liner 5' in Figure 5e, and therefore the adapter 100 does not have its mounting element 21 that contacts the shell 3, and a gap 218 exists.

[0195] Generally, during assembly, the liner 5 is first introduced into the adapter 100, giving it the assembled liner-adapter state. Then, the combined liner 5 and adapter 100 can be attached to the shell 3 to provide the assembled state of the implant 1.

[0196] Figures 5b and 5c show the adapter 100 in detail. To provide a firm engagement between the adapter 100 and the shell 3, a base stem 112 is provided in the center of the proximal surface 114 of the adapter 100. The base stem 112 has a threaded portion 116 that cooperates with a threaded section 108 provided in the opening 102 of the shell connection position 110 of the shell 3. The base stem 112 extends from the adapter base 118, which provides the mounting position / element.

[0197] The adapter base 118 has four arm elements 120 extending outward and distally therefrom. Each arm element 120 has the same shape and configuration. The arm elements 120 are provided in two opposing pairs. Each arm element 120 has a base section 122 that connects the arm element to the adapter base 118, a narrower intermediate section 124 which is considered to be in the circumferential range, and an end section 126. The intermediate section 124 provides the main ability for the arm element 120 to flex radially outward and inward as needed.

[0198] Each of the end sections 126 is provided with a contact element 21. In each case, the contact element 21 is shown with an equivalent contour. In this embodiment, the contact element 21 has an outer surface portion 128 which is a smooth continuation of the outer surface 130 of the arm. The outer surface 130 of the arm and the outer surface portion 128 may have a profile complementary to the portion of the shell 3 that it contacts in the assembled state. The contact element 21 also has an inner surface 132, a distal surface 134, a proximal surface 136, and a side surface 138. The inner surface 132 provides a tapered engagement region that contacts the liner 5 when in use.

[0199] In the assembled state, if the liner 5 is in a modified form that includes a peripheral open slot contributing to the abutment position, the proximal surface 136 of the abutment element 21 abuts against the base surface 206 of the liner 5. The inner surface 132 of the abutment element 21 abuts against the inner surface 202 of the liner 5, and the side surface 138 of the abutment element 21 abuts against the side surface 204 of the liner 5. The abutment element 21 generally has a profile complementary to the peripheral open slot 200 provided by the liner 5.

[0200] As the liner 5 is introduced proximal to the adapter 100, the outer surface 35 of the liner 5 contacts a position on the arm element 120, and further movement of the liner 5 into the adapter 100 causes the arm element 120 to bend outward. Finally, the contact element 21 on the arm element 120 aligns with the contact position 407 of the liner. This alignment may occur through axial movement of the adapter 100 and the liner 5, or through rotation of the adapter 100 relative to the liner 5, or a combination of both movements. Once the contact element 21 aligns with the contact position 407, the contact position 21 can enter the contact position 407, the arm can return radially inward, and the bending of the arm element 120 is relieved.

[0201] In this assembled liner-adapter state, the combination of liner 5 and adapter 100 can be introduced into the shell 3, resulting in the fully assembled configuration shown in Figure 5d. The combination of liner 5 and adapter 100 is inserted proximal to the dish recess 11 of the shell 3, and is operated so that the proximal end 140 of the base stem 112, located in the center of the proximal surface 114 of the adapter 100, is positioned within the opening 102 of the shell connection position 110 of the shell 3. The relative rotation of the combination of liner 5 and adapter 100 with respect to the shell 3 causes the threaded portion 116 of the base stem 112 to engage with the threaded section 108 located in the opening 102 of the base 104 of the dish recess 11 of the shell 3, and advances along the threaded section 108. As the rotation continues, the outer surface of the adapter 100 moves closer to the inner surface of the shell 3. When the proximal surface 114 of the adapter 100 contacts the distal surface of the shell 3, the profiles of the shell 3 and the adapter 100 are such that the distal section 146 of the dish-shaped recess 11 contacts the outer arm surface 130 and outer surface portion 128 of the arm element 120 of the adapter 100. This applies a compressive force to the contact element 21 of the adapter 100 toward the contact position 407 of the liner 5, providing a locking ring type operation. Thus, a firm engagement is provided between the shell 3 and the adapter 100, which also serves to increase the firm engagement between the adapter 100 and the liner 5, leading to the assembled implant state.

[0202] The adapter 100 can bend radially outward and radially inward across a range of materials to accommodate different dimensions of the liner 5, so that the shell 3 can accommodate different liners 5 in this disclosure. In practice, the adapter 100 is mainly located within a cement-filled void 75 in the prior art where only the shell 3 and liner 5 are used. When the shell 3 is connected to the liner 5 using the adapter 100, there is no cement in the void 75. At the same time, the adapter 100 can still be firmly attached to the shell 3 and firmly clamped to the liner. Referring to Figure 5e, a first-size liner 5', which is the largest size that can be accommodated by this adapter 100, is used. In Figure 5f, a smaller liner 5'' is used, and therefore the adapter 100 has its mounting element 21 that is not deformed very widely, and a gap 218 exists between the adapter 100 and the shell 3.

[0203] Referring to Figure 6a, a modified version of the adapter 100 is provided. Figures 5b and 5c provide four arm elements 120 that provide a high level of radial outward and inward flexibility. The circumferential range of the contact elements 21 of the arm elements 120 affects the contact area between the contact elements 21 and the contact position 407 of the liner 5. The modification in Figure 6a provides an increased contact area. In this case, the three arm elements 120 have a much wider base section 122 connecting them to the adapter base 118, a wider intermediate section 124 wider than the base section 122, and an even wider end section 126. The base section 122 provides the main ability for the arm elements 120 to flex radially outward and inward as needed. Only small finger-like gaps 148 exist between adjacent arm elements 120.

[0204] Because the end section 126 is much larger, the contact element 21 can also have a much larger circumferential range. The contact position 407 on the liner has a matching range, and therefore a much larger contact area is provided between the adapter 100 and the line 5.

[0205] The end section 126 and the abutment element 21 have a cross-section similar to that of the embodiments in Figures 5b and 5c, as shown in Figure 6b. The abutment element 21 has an outer surface portion 128 which is a smooth continuation of the outer surface 130 of the arm. The outer surface 130 of the arm and the outer surface portion 128 may have a profile complementary to the portion of the shell that abuts when assembled. The mounting element also has an inner surface 132, a distal surface 134, a proximal surface 136, and a side surface 138.

[0206] As shown in the figure, the arm element 120 extends outward from the base section 122, and thus forms three substantial sectoral or petal-shaped sections that extend around a very substantial portion of the circumference, perhaps more than 70%.

[0207] A further modification of Figure 7 shows, in a side view, the arrangement for the periphery of the adapter 100, where the finger-shaped gap 148 is closed around the periphery, and the end sections 126 of the arms abut each other at the joint 150. Thus, in this modification, the mounting element 21 extends around the entire periphery.

[0208] The modifications in Figures 8a and 8b show alternative joints 150 between adjacent arm elements 120 in different modifications in which the abutment element 21 extends around the entire perimeter of the adapter 100 in a plan view. Figure 8a shows the adapter 100 with a first radial range of the arm element 120, and Figure 8b shows the same arm element 120, but with a larger second radial range. This coincides with the range in Figure 8b where a larger liner 5 exists than in Figure 8a, or with the deformed position of the arm element 120 before the abutment element 21 moves to the abutment position 7, although the liner 5 is inserted.

[0209] In this modified example, the joint 150 is formed from two overlapping reduced-thickness sections 152a and 152b. These allow for flexing and an increase in the diameter of the adapter 100, but the reduced-thickness sections 152a and 152b still overlap each other. One reduced-thickness section 152a is provided by the outer section, and the other reduced-thickness section 152b is provided by the inner section.

[0210] In the embodiment described above, the adapter 100 was secured to the shell 3 using a screw connection. Other rigid connection configurations are also possible. Figure 9 shows a modification in which the base stem 112 is still located in the center of the proximal surface 114 of the adapter 100. The base stem 112 lacks a threaded portion 116. Instead, the base stem 112 has a first diameter section 154, followed by a second diameter section 156 that is reduced proximal, and a third intermediate diameter section 158 that is also proximal. The second diameter section 156 and the third intermediate diameter section 158 are formed by two or more stems, two stems in this figure, stems 160a and 160b.

[0211] Both stems 160a and 160b have equivalent but mirror-image profiles. The profiles include a distally facing surface 162, an inclined laterally facing surface 164, a proximal facing surface 166, and an inwardly facing surface 168.

[0212] When in use, as the stems 160a and 160b approach the shell 3, they are positioned to align with the opening 102 provided in the base 104 of the dish-shaped recess 11 of the shell 3, and then enter the opening 102. The most distal section 162 of the opening 102 has a cross-section complementary to the first diameter section 154 of the adapter 100, so that the stems 160a and 160b can be fully inserted. The intermediate section 164 of the opening 102 follows the most distal section 162 and has a cross-section through which the stems 160a and 160b can only pass by being deflected toward each other. This is the minimum cross-section of the opening 102. The inclined, side-facing surface 164 first abuts the intermediate section 164, thus facilitating the deflection of the stems 160a and 160b toward each other. Proximal to the intermediate section 164 of the opening 102, the nearest section 166 is reached, which has an intermediate cross-section that allows the stems 160a, 160b to expand outward again. The intermediate section 164 of the opening and the second diameter section 156 of the adapter 100 are complementary to each other. As a result, the position in Figure 9 is reached in the assembled state. The distally facing surfaces 162 of the stems 160a, 160b abut against the proximal facing surface 168 of the shell 3. The proximal facing surface 170 of the first diameter section 154 abuts against the distally facing surface 172 of the intermediate section 164. A rigid attachment of the adapter 100 to the shell 3 is provided.

[0213] The lateral elasticity of stems 160a and 160b can be used, but it is also possible to introduce additional elements driven between stems 160a and 160b into the gap 174 to push them into place. This type of fastening can be added to the aforementioned threads to resist loosening of the threads over time.

[0214] The adapter 100 can also be securely fastened to the shell 3 by a snap-fit ​​or clip-type configuration. While the use of the main vertex opening 102 of the shell 3 has been described above, it is possible to use other through-holes, such as other screw holes distributed throughout the shell, to receive these or other fasteners.

[0215] [Implementation Method] (1) An acetabular component of an orthopedic joint prosthesis, wherein the acetabular component is An outer shell for attachment to the acetabulum, A liner provided at least partially within the outer shell and adapted to provide a contact surface for the femoral component of the orthopedic joint prosthesis, An adapter provided at least partially within the outer shell, wherein the liner is provided at least partially within the adapter, Equipped with, The acetabular component has an assembled state, in which relative joint movement between the adapter and the outer shell is prevented. (2) The acetabular component according to Embodiment 1, wherein relative joint movement between the adapter and the liner is prevented in the assembled state. (3) The acetabular component according to Embodiment 1 or 2, wherein the adapter has an engaged state with the shell, the plurality of mounting elements engage with a plurality of mounting positions in the engaged state, at least one of the mounting elements or mounting positions is provided on the adapter and the other is provided on the shell, and when the acetabular component is in the assembled state, the shell and the adapter are engaged, and the adapter and the liner are engaged. (4) The acetabular component according to any one of embodiments 1 to 3, wherein the liner has an engaged state with the adapter, and the plurality of contact elements engage with a plurality of contact positions in the engaged state, and at least one of the contact elements or contact positions is provided on the adapter and the other is provided on the liner. (5) The acetabular component according to any one of embodiments 1 to 4, wherein when the acetabular component is in the assembled state, the adapter is compressed by the liner and / or the liner is compressed by the adapter.

[0216] (6) The acetabular component according to any one of embodiments 1 to 5, wherein in the assembled state, the outer shell abuts against the adapter, and the adapter abuts against the liner. (7) The acetabular component according to any one of embodiments 1 to 6, wherein the adapter has a disengaged state and an engaged state with respect to the shell, and a transition state between the disengaged state and the engaged state, and the adapter has a first configuration in the transition state and a different second configuration in the engaged state. (8) The acetabular component according to Embodiment 7, wherein, in the first configuration, the mounting element or mounting position provided on the adapter is further spaced apart in the circumferential and / or radial direction than in the first configuration. (9) The acetabular component according to embodiment 7 or 8, wherein the adapter has a third configuration in the disengaged state, and the mounting element or mounting position provided on the adapter is further spaced in the circumferential and / or radial directions than the third configuration in the first configuration and / or the second configuration. (10) The acetabular component according to any one of embodiments 1 to 9, wherein the adapter includes a base element and a plurality of arm elements extending from the base element, and the contact element and / or the contact position is provided on the arm elements.

[0217] (11) The acetabular component according to Embodiment 10, wherein the arm element is flexible and flexes further radially outward in the transition state compared to the assembled state. (12) The acetabular component according to Embodiment 3 or any embodiment thereof, wherein the contact element or contact position provided on the adapter is provided around the distal periphery of the adapter. (13) The acetabular component according to Embodiment 12, wherein the contact element and / or the contact position extends around at least 15% of the distal circumference of the adapter. (14) The acetabular component according to Embodiment 13, wherein the contact element and / or the contact position extends around at least 80% of the distal circumference of the adapter. (15) The acetabular component according to any one of embodiments 12 to 14, wherein the contact elements and / or contact positions extend around the entire distal circumference of the adapter, such that adjacent contact elements and / or contact positions contact or overlap each other.

[0218] (16) An acetabular component according to Embodiment 10 or any embodiment thereof, wherein one or more of the arm elements include a base section, an intermediate section, and a distal section, and the contact element and / or the contact position is provided in the distal section of each arm. (17) The acetabular component according to Embodiment 6 or any of the embodiments thereof, wherein the adapter comprises one or more mounting elements, the mounting elements extending from the base section of the adapter. (18) The acetabular component according to any one of embodiments 1 to 17, wherein the adapter includes an outer shell connecting element as a mounting element, and the outer shell includes an adapter connecting position for attaching the adapter to the outer shell as a mounting position. (19) The acetabular component according to embodiment 18, wherein the outer shell connecting element is a threaded element and the adapter connecting element is a threaded element. (20) The acetabular component according to Embodiment 18, wherein the outer shell connection element includes one or more distal contact surfaces that contact one or more proximal contact surfaces provided by the adapter connection element.

[0219] (21) The acetabular component according to embodiment 19, wherein the distal contact surface of the outer shell connecting element of the adapter is provided on one or more deformable elements such as a stem. (22) A kit of surgical components, An orthopedic joint prosthesis comprising an acetabular component, wherein the acetabular component is An outer shell for attachment to the acetabulum, A plurality of liners, wherein at least one of the liners has one or more characteristics that are different from another of the liners, Equipped with an adapter, The plurality of liners are adapted to be at least partially provided within the outer shell and to provide contact surfaces for the femoral component of the orthopedic joint prosthesis, A kit of surgical components, wherein the adapter is fitted to be at least partially provided within the outer shell, and one of the liners is at least partially provided within the adapter. (23) The kit according to Embodiment 22, wherein one or more different characteristics between the liners are that one or more liners are unmodified cement-bonded type liners provided without connection positions and / or connection elements for the adapter, and one or more liners are unmodified non-cement-bonded type liners with one or more connection positions and / or connection elements for the adapter. (24) The kit according to Embodiment 22 or 23, wherein one or more different properties between the liners are selected from the group including one or more distal properties, one or more distal surface properties, one or more different sizes, one or more different specified positions for the contact surface of the liner, and one or more different contact surface profiles. (25) The kit is The kit according to embodiment 21 or 22, further comprising one or more further outer shells, wherein at least one of the outer shells has one or more shell characteristics different from another of the outer shells.

[0220] (26) The kit according to Embodiment 25, wherein one or more different properties between the outer shells are that one or more outer shells are cemented outer shells and one or more outer shells are not cemented outer shells. (27) The kit according to any of Embodiment 22, further comprising one or more further adapters, at least one of the adapters having one or more adapter characteristics different from another of the adapters. (28) The kit is One or more femoral components, and / or A kit according to any one of embodiments 22 to 27, further comprising one or more surgical instruments. (29) A method for implanting components of a prosthesis, the method being: Obtaining the adapter, liner, and outer shell, Inserting the liner into the adapter, Inserting the adapter into the outer shell, This includes implanting the adapter, the liner, and the outer shell into the surgical site. The aforementioned components are, Outer shell and A liner provided at least partially within the outer shell and adapted to provide contact surfaces for further components of the prosthesis, The adapter comprises an adapter provided at least partially within the outer shell, wherein the liner is provided at least partially within the adapter, The method provides the acetabular component with an assembled state, wherein relative joint movement between the adapter and the outer shell is prevented in the assembled state. (30) The method according to embodiment 29, wherein relative joint movement between the adapter and the liner is prevented in the assembled state.

Claims

1. An acetabular component of an orthopedic joint prosthesis, wherein the acetabular component is An outer shell for attachment to the acetabulum, A liner provided at least partially within the outer shell and adapted to provide a contact surface for the femoral component of the orthopedic joint prosthesis, An adapter provided at least partially within the outer shell, wherein the liner is provided at least partially within the adapter, Equipped with, The acetabular component has an assembled state, in which relative joint movement between the adapter and the outer shell is prevented.

2. The acetabular component according to claim 1, wherein relative joint movement between the adapter and the liner is prevented in the assembled state.

3. The acetabular component according to claim 1 or 2, wherein the adapter has an engaged state with the shell, the plurality of mounting elements engage with a plurality of mounting positions in the engaged state, at least one of the mounting elements or mounting positions is provided on the adapter and the other is provided on the shell, and when the acetabular component is in the assembled state, the shell and the adapter are engaged, and the adapter and the liner are engaged.

4. The acetabular component according to claim 1, wherein the liner has an engaged state with the adapter, and the plurality of contact elements engage with a plurality of contact positions in the engaged state, and at least one of the contact elements or contact positions is provided on the adapter and the other is provided on the liner.

5. The acetabular component according to claim 1, wherein when the acetabular component is in the assembled state, the adapter is compressed by the liner and / or the liner is compressed by the adapter.

6. In the assembled state, the outer shell abuts against the adapter, and the adapter abuts against the liner, as described in claim 1.

7. The acetabular component according to claim 1, wherein the adapter has a disengaged state and an engaged state with respect to the shell, and a transition state between the disengaged state and the engaged state, and the adapter has a first configuration in the transition state and a different second configuration in the engaged state.

8. The acetabular component according to claim 7, wherein, in the first configuration, the mounting element or mounting position provided on the adapter is further spaced apart in the circumferential and / or radial directions than in the first configuration.

9. The acetabular component according to claim 7 or 8, wherein the adapter has a third configuration in the disengaged state, and the mounting element or mounting position provided on the adapter is further spaced in the circumferential and / or radial directions than the third configuration in the first configuration and / or the second configuration.

10. The acetabular component according to claim 1, wherein the adapter includes a base element and a plurality of arm elements extending from the base element, and the contact element and / or the contact position is provided on the arm elements.

11. The acetabular component according to claim 10, wherein the arm element is flexible and, compared to the assembled state, further bends radially outward in the transition state.

12. The acetabular component according to claim 3, wherein the contact element or contact position provided on the adapter is located around the distal periphery of the adapter.

13. The acetabular component according to claim 12, wherein the contact element and / or the contact position extends around at least 15% of the distal circumference of the adapter.

14. The acetabular component according to claim 13, wherein the contact element and / or the contact position extends around at least 80% of the distal circumference of the adapter.

15. The acetabular component according to any one of claims 12 to 14, wherein the contact elements and / or contact positions extend around the entire distal circumference of the adapter, such that adjacent contact elements and / or contact positions contact or overlap each other.

16. The acetabular component according to claim 10, wherein one or more of the arm elements include a base section, an intermediate section, and a distal section, and the contact element and / or the contact position is provided in the distal section of each arm.

17. The acetabular component according to claim 6, wherein the adapter comprises one or more mounting elements, the mounting elements extending from the base section of the adapter.

18. The acetabular component according to claim 1, wherein the adapter includes an outer shell connecting element as a mounting element, and the outer shell includes an adapter connecting position for attaching the adapter to the outer shell as a mounting position.

19. The acetabular component according to claim 18, wherein the outer shell connecting element is a threaded element and the adapter connecting element is a threaded element.

20. The acetabular component according to claim 18, wherein the outer shell connection element includes one or more distal contact surfaces that contact one or more proximal contact surfaces provided by the adapter connection element.

21. The acetabular component according to claim 19, wherein the distal contact surface of the outer shell connecting element of the adapter is provided on one or more deformable elements such as a stem.

22. A kit of surgical components, An orthopedic joint prosthesis comprising an acetabular component, wherein the acetabular component is An outer shell for attachment to the acetabulum, A plurality of liners, wherein at least one of the liners has one or more characteristics that are different from another of the liners, Equipped with an adapter, The plurality of liners are adapted to be at least partially provided within the outer shell and to provide contact surfaces for the femoral component of the orthopedic joint prosthesis, A kit of surgical components, wherein the adapter is fitted to be at least partially provided within the outer shell, and one of the liners is at least partially provided within the adapter.

23. The kit according to claim 22, wherein one or more different characteristics between the liners are that one or more liners are unmodified cement-bonded liners provided without connection positions and / or connection elements for the adapter, and one or more liners are unmodified non-cement-bonded liners provided with one or more connection positions and / or connection elements for the adapter.

24. The kit according to claim 22 or 23, wherein one or more different properties between the liners are selected from the group including one or more distal properties, one or more distal surface properties, one or more different sizes, one or more different specified positions for the contact surface of the liner, and one or more different contact surface profiles.

25. The aforementioned kit is The kit according to claim 22 or 23, further comprising one or more further outer shells, wherein at least one of the outer shells has one or more shell characteristics different from another of the outer shells.

26. The kit according to claim 25, wherein one or more different properties between the outer shells are that one or more outer shells are cemented outer shells and one or more outer shells are not cemented outer shells.

27. The kit according to claim 22, further comprising one or more further adapters, wherein at least one of the adapters has one or more adapter characteristics that are different from another of the adapters.

28. The aforementioned kit is One or more femoral components, and / or The kit according to claim 22, further comprising one or more surgical instruments.

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