Monolithic base plate

Abstract

Various embodiments of a novel glenoid implant base plate are disclosed. A prosthesis for attachment to the glenoid is provided, the prosthesis including a monolithic metal structure incorporating a distal surface and a proximal surface, a base plate body, a post extending from the proximal surface, and features associated with the post capable of providing orientation stability for a modular bone augment. Also disclosed is a prosthesis for attachment to the glenoid, including a base plate body that is a monolithic metal structure incorporating an integrally formed metal bone augment.

Description

Technical Field

[0001] Cross - Reference to Related Applications This application claims priority to U.S. Provisional Application No. 63 / 368,419, filed on July 14, 2022, the entire content of which is incorporated herein by reference.

[0002] This disclosure generally relates to glenoid implants for artificial shoulders.

Background Art

[0003] Existing reverse - type glenoid implant base plates do not adequately accommodate the use of modular bone augments disposed between the glenoid and the base plate. Therefore, an improvement in the design of glenoid implant base plates is desired. Further, it is also desired to more appropriately incorporate metal bone augments into reverse - type glenoid implant base plates.

Summary of the Invention

Means for Solving the Problems

[0004] Various embodiments of a prosthesis for attachment to a glenoid are provided, including a base plate body having a monolithic metal structure and configured to receive a modular bone augment. The modular bone augment may be a bone graft or a metal augment. Embodiments of a prosthesis for attachment to a glenoid are also provided, the prosthesis comprising a base plate body having a monolithic metal structure with a metal bone augment incorporated within its structure.

[0005] In some embodiments, the base plate body includes a distal surface, a proximal surface, a post extending from the proximal surface, and a plurality of fins extending radially from the post at or near the location where the post intersects the proximal surface.

[0006] Also provided is another embodiment of a prosthesis for attachment to a glenoid fossa including a baseplate body of a monolithic metal structure, the baseplate body having a distal surface and a proximal surface, and a post extending from the proximal surface, the post having a tapered conical shape with a taper angle of 5 to 30 degrees, whereby its diameter decreases in the proximal direction, the post, and a plurality of fins provided at the tip of the post and extending radially from the post.

[0007] Another embodiment of a prosthesis for attachment to a glenoid fossa including a baseplate body of a monolithic metal structure is provided, the baseplate body having a distal surface and a proximal surface, and a post extending from the proximal surface, the post having a cylindrical outer shape and comprising a wireframe structure defining an internal volume configured as a porous structure.

[0008] Also provided is another embodiment of a prosthesis for attachment to a glenoid fossa including a baseplate body of a monolithic metal structure, the baseplate body having a distal surface and a proximal surface, and a post extending from the proximal surface, the post comprising a hollow structure defining an internal volume, the hollow substantially cylindrical structure including a plurality of openings providing access to the internal volume.

[0009] Another embodiment of a prosthesis for attachment to a glenoid fossa including a baseplate body of a monolithic metal structure is provided, the baseplate body having a distal surface and a proximal surface opposite the distal surface, the proximal surface including an osseous augment defining a bone engagement surface extending away from and spaced from the distal surface, and a post extending from the osseous augment, the post comprising an outer surface and a plurality of porous surface portions.

[0010] Hereinafter, various embodiments of the implant of the present disclosure will be described in more detail with reference to the accompanying drawings. The structures in the figures of the drawings are schematically illustrated and are not necessarily intended to show actual dimensions or relative sizes.

Brief Description of the Drawings

[0011]

Figure 1A

Figure 1B

Figure 1C

Figure 1D

Figure 2

Figure 3

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Figure 5A

Figure 5B

Figure 5C

Figure 5D

Figure 6A

Figure 6B

Figure 6C

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DETAILED DESCRIPTION OF THE INVENTION

[0012] The description of this exemplary embodiment is intended to be read in connection with the accompanying drawings. The accompanying drawings should be considered as a part of the entire written description. The figures in the drawings are not necessarily to scale, and certain features may be exaggerated in scale or shown in somewhat schematic form for clarity and brevity. In the description, relative terms such as "horizontal", "vertical", "up", "down", "top", and "bottom", and their derivatives (e.g., "horizontally", "downwardly", "upwardly", etc.) should be construed to refer to the direction being described at that time or the direction shown in the drawing under consideration. These relative terms are for convenience of description and are not normally intended to require a particular direction. Terms including "inward" versus "outward", "longitudinal" versus "lateral", etc. should be construed as relative to each other as necessary or relative to an axis of elongation, or an axis of rotation or center of rotation. Terms related to attachment, coupling, etc., such as "connected" and "interconnected", refer to a relationship where structures are directly or indirectly fixed or attached to each other through intervening structures, and both movable and fixed attachments or relationships, unless specifically stated otherwise. When only a single machine is shown, the term "machine" shall be construed to include any collection of machines that individually or jointly execute a set (or sets) of instructions to perform any one or more of the methodologies considered herein. The term "operably connected" is an attachment, coupling, or connection by which the associated structures can operate as intended by virtue of that relationship. In the claims, where a means-plus-function clause is used, it is intended to cover the structures described, suggested, or disclosed by the written description or drawings for performing the recited function, including not only structural equivalents but also equivalent structures.

[0013] Referring to FIG. 1A, an embodiment of a prosthesis 100 for attachment to a glenoid fossa is provided. The prosthesis 100 includes a baseplate body 110 that is a monolithic metal structure. The baseplate body 110 includes a distal surface 111, a proximal surface 112, and a post 120 extending from the proximal surface 112. Features of the baseplate body 110 and the post 120 that jointly provide orientation stability for a modular bone graft used with the prosthesis 100 are described herein.

[0014] In some embodiments, the monolithic metal structure of the baseplate body 110 can be manufactured by an additive manufacturing process such as 3D printing. The post 120 is configured to be disposed within a complementary hole or recess prepared within the glenoid fossa so as to be involved in attaching the prosthesis 100 to the glenoid fossa.

[0015] In some embodiments, the proximal surface 112 is configured to engage a modular bone augment such as the bone augment 50 shown in FIG. 2 and secure this modular bone augment between the baseplate body 110 and the patient's glenoid fossa. As shown for the exemplary modular bone augment 50, the modular bone augment may have two main surfaces, a first surface 54 and a second surface 55. The first surface 54 engages the proximal surface 112 of the baseplate body, and the second surface 55 faces the glenoid fossa surface. The shape and contour of the second surface 55 are configured to fill voids in the deteriorated glenoid fossa. In some applications, the second surface 55 can be customized to the patient to more accurately and effectively fill voids within the glenoid fossa. For the function of the bone augment 50, the second surface 55 is often angled and / or asymmetric and requires a specific orientation with respect to the baseplate. The bone augment 50 needs to be installed in a specific orientation with the prosthesis 100 to properly augment the bone in cases where there may be voids in the bone.

[0016] In some embodiments, as illustrated in prosthesis 100A shown in FIG. 1B, to promote ingrowth of bone tissue at the interface between the proximal surface 112 and the modular bone augment, and to enhance fixation of prosthesis 100A after implantation, a plurality of dimples 115 may be provided on the proximal surface 112.

[0017] The baseplate body 110 may also include a plurality of fins 130 that extend radially from the post 120 at or near the location where the post 120 intersects the proximal surface 112. As illustrated in the embodiment shown in FIG. 1A, in some embodiments, the plurality of fins 130 may be disposed along the joint J where the post 120 intersects the proximal surface 112 and may extend radially along the proximal surface 112. The fins 130 may taper towards the proximal surface 112 as they extend radially outward from the post 120. In some embodiments, the modular bone augment 50 may be configured to receive the fins 130 when the bone augment 50 engages the proximal surface 112. For example, a recess or groove may be provided on the first surface 54 of the bone augment 50 and arranged to receive the fins 130. By the engagement between the fins 130 and the bone augment 50, the bone augment 50 may be fixed in a desired orientation relative to the baseplate body 110 so as to maintain the required specific orientation of the bone augment 50.

[0018] Referring to FIG. 2, the modular bone augment 50 can be configured to fit over the post 120 and abut against the proximal surface 112 of the base plate body 110. The bone augment 50 may be provided with a hole 52 extending from a first surface 54 through the thickness of the bone augment to a second surface 55. The hole 52 is sized to receive the post 120 such that the bone augment 50 can fit over the post 120. The bone augment 50 is configured such that when the bone graft is fitted over the post 120, the first surface 54 abuts against the proximal surface 112. The second surface 55 is contoured to conform to the shape and contour of the void in the surface of the glenoid fossa. The modular bone augment 50 can be formed of a bone graft or a porous surgical grade material that is biocompatible with the human body when implanted. Such a porous material can be a metallic material, a ceramic material, or a polymeric material. The embodiment of the bone augment 50 shown in FIG. 2 has a generally cylindrical or disk-like shape, although the shape of the bone augment 50 need not necessarily be so limited. The shape and contour of the bone augment 50 can be varied and provided in any shape necessary to augment the void in the glenoid fossa so long as when the prostheses 100, 100A are installed, the bone augment is fixed to the proximal side of the base plate body 110 and maintains the desired specific orientation of the bone augment and prevents the bone augment 50 from rotating around the post 120.

[0019] In an embodiment where the modular bone augment 50 is fabricated from a bone graft, when the modular bone augment 50 is installed, its first surface 54 will contact the proximal surface 112 of the base plate body 110, and when the bone augment 50 is pressed against the proximal surface 112, the plurality of fins 130 will cut into the bone augment 50 and can prevent the bone graft 50 from rotating around the post 120.

[0020] The plurality of fins 130 on the base plate can take various structural configurations as long as they provide means for preventing the unwanted rotation of the modular bone augments 50 after the bone augments 50 are installed. Referring to FIGS. 1B and 1C, in an embodiment of the prosthesis 100A, the plurality of fins 130A are provided on the post 120 and can be located near the joint J where the post 120 intersects the proximal surface 112, but do not contact the proximal surface 112. In the specific example shown in FIGS. 1B and 1C, the fins 130A provided on the post 120 can be configured in a short tooth-like form and can be spaced apart from the joint J.

[0021] In some embodiments, the prostheses 100, 100A can include a plurality of openings 140 provided between the post 120 and the periphery of the base plate body, and these plurality of openings 140 receive one or more bone screws that help to fix the prostheses 100, 100A in the joint socket. Each of the plurality of openings 140 extends from the distal surface 111 through the base plate body 110 to the proximal surface 112.

[0022] In some embodiments, the post 120 may have a generally cylindrical shape with a diameter that gradually decreases in the proximal direction.

[0023] Referring to FIG. 1D, in some embodiments, the post 120 may be configured to include a hole or channel 128 that can assist in aligning the articulating component with the prostheses 100, 100A when the articulating component is attached to the baseplate body 110. The channel 128 extends into the post 120 from the distal surface 111 along the longitudinal axis L of the post 120. In some embodiments, as shown in the embodiment of FIG. 1D, the channel 128 can extend through the entire length of the post 120. The channel 128 terminates at the distal surface 111 and has a diameter suitable for snugly receiving a guide pin. In use, the guide pin can be inserted into the channel 128 from the distal surface 311 side, such that the guide pin extends out of the channel 128 on the distal surface 111 side. An articulating component, such as the exemplary articulating component 700 shown in FIG. 5D, configured to mate with the baseplate body 110 may be provided with a corresponding hole or channel configured to receive the guide pin extending from the channel 128, such that the guide pin can assist in aligning these two components when the articulating component 700 and the baseplate body 110 are coupled together.

[0024] The channel 128 may be a blind hole that extends into the post 120 to a predetermined depth such that a guide pin fully inserted into portion A extends out of the channel 128 by an appropriate amount, and can provide a guiding function for the articulating component 700.

[0025] In some embodiments, channel 128 can extend through the entire length of post 120 such that channel 128 opens at the distal face 111 and proximal end of post 120. In such embodiments, channel 128 can be comprised of two portions A and B, where portion A is the portion that opens at the distal face 111 and receives the guide pin. Portion B can have a diameter smaller than portion A, such that the guide pin is too large to fit into the smaller diameter portion B. This configuration prevents the guide pin from exiting at the proximal end of post 120 and entering the patient's bone. Further, with both ends of channel 128 open, debris and fluid generated during the manufacturing process of drilling channel 128 can be discharged.

[0026] Referring to FIGS. 3A - 3B, a prosthesis 200 for attachment to a glenoid fossa according to another embodiment is provided. Prosthesis 200 includes a baseplate body 210 that is a monolithic metal structure. Baseplate body 210 includes a distal face 211, a proximal face 212, and a post 220 extending from proximal face 212. The features of baseplate body 210 and post 220 that provide orientation stability for a modular type bone graft used with prosthesis 200 are described herein.

[0027] In this embodiment, post 220 includes a tapered conical shape having a taper angle of about 5 - 30 degrees, whereby its diameter decreases in the proximal direction from baseplate body 210. The tapered shape of post 220 provides a progressive press - fit engagement with the glenoid fossa such that post 220 can be pushed into the glenoid fossa with some minimal preparation (i.e., reaming and / or drilling) of the glenoid fossa, or without any preparation of the glenoid fossa.

[0028] The post 220 can also include a plurality of fins 230 provided at the tip 220T of the post 220, and the fins 230 extend radially from the post 220. The tip 220T is the end of the post 220 that is farthest from the base plate body 210. The fins 230 can be shaped to further enable the ability to push the tapered post 220 into the socket regardless of the presence or absence of preparation of either socket. For example, the leading edge of the fin 230 is sharp like a blade and can be inclined as shown in FIG. 3 so that the fin 230 can cut into the socket and easily push the tapered post 220 into the socket.

[0029] In some embodiments, the monolithic metal structure of the base plate body 210 can be manufactured by an additive manufacturing process such as 3D printing. The post 220 is configured to be disposed within complementary holes or recesses prepared within the socket so as to be involved in attaching the prosthesis 200 to the socket.

[0030] In some embodiments, the prosthesis 200 can further include a second set of fins similar to the plurality of fins 130 and 130A in the prosthesis embodiments 100 and 100A, respectively. Such a second set of fins extends radially from the post 220 at or near the junction J where the post 220 intersects the proximal surface 212. In some embodiments, the second set of fins is located at the junction J and extends radially along the proximal surface, similar to the fin 130 shown in FIG. 1A. In some embodiments, the second set of fins is located near the junction J but does not contact the proximal surface 212.

[0031] In some embodiments, the prosthesis 200 can further include a plurality of openings 240 provided between the post 220 and the periphery of the base plate body, and the plurality of openings 240 receive one or more bone screws for fixing the prosthesis 200 to the socket. Each of the plurality of openings 240 extends from the distal surface 211 through the base plate body 210 to the proximal surface 212.

[0032] In some embodiments, the prosthesis 200 can further include a modular bone augment 50 configured to be fitted onto the post 220 and abut against the proximal surface 212 of the base plate body 210.

[0033] Referring to FIGS. 4A-4B, a prosthesis 300 for attachment to a glenoid cavity according to another embodiment is provided. The prosthesis 300 includes a base plate body 310 that is a monolithic metal structure. The base plate body 310 includes a distal surface 311, a proximal surface 312, and a post 320 extending from the proximal surface 312. In this embodiment, the post 320 includes a wireframe structure 325 having a cylindrical outer shape and defines an internal volume configured as a porous structure 327. The features of the base plate body 310 and the post 320 that provide orientation stability of the modular bone augment used with the prosthesis 300 are described herein.

[0034] In some embodiments, the monolithic metal structure of the base plate body 310 can be manufactured by an additive manufacturing process such as 3D printing. The porous structure 327 can function as a scaffold to promote bone ingrowth after the prosthesis 300 is implanted into the glenoid cavity.

[0035] Both the wireframe structure 325 and the porous structure 327 can be formed from the same metal material and can be formed simultaneously through an additive manufacturing process. This enables a structurally composite configuration of the post 320 (not materially composite since the wireframe structure 325 and the porous structure 327 are made of the same material) in which the two structural portions of the wireframe structure 325 and the porous structure 327 are well fused. The post 320 is configured to be disposed within a complementary hole or recess prepared within the glenoid cavity so as to be involved in attaching the prosthesis 300 to the glenoid cavity.

[0036] In some embodiments of the prosthesis 300, the porous structure 327 can be configured to completely occupy the internal volume of the wireframe structure 325 to maximize the amount of bone ingrowth into the post 320. In some embodiments, similar to the post 120 in the prostheses 100, 100A, the post 320 can be configured to include holes or channels 328 that assist in aligning the glenosphere component with the prosthesis 300 during attachment of the glenosphere component to the baseplate body 310. The structure and function of the channel 328 are the same as those of the channel 128 provided in the post 120.

[0037] In some embodiments of the prosthesis 300, the proximal surface 312 can be composed of a surface layer 312a configured as a porous structure. This increases the surface area on the prosthesis 300 that can promote bone ingrowth after the prosthesis 300 is implanted into the joint socket.

[0038] In some embodiments, the cylindrical outer shape of the wireframe structure 325 is a circular cylinder. In some embodiments, the cylindrical outer shape of the wireframe structure is a non-circular cylinder. For example, the cylindrical outer shape is a cylinder having an elliptical cross-section.

[0039] In some embodiments, the prosthesis 300 can further include a plurality of fins (similar to the fins 130 shown in the prosthesis embodiment 100) that extend radially from the post 320 at or near the location where the post intersects the proximal surface 312. In some embodiments, the plurality of fins are disposed at the location where the post intersects the proximal surface 312 and can extend radially along the proximal surface. In some embodiments, the plurality of fins are located near the location where the post intersects the proximal surface but do not contact the proximal surface 312.

[0040] In some embodiments, the prosthesis 300 can further include a plurality of openings 340 provided between the post 320 and the periphery of the base plate body, and the plurality of openings 340 receive one or more bone screws for fixing the prosthesis 300 in the joint socket. Each of the plurality of openings 340 extends from the distal surface 311 through the base plate body 310 to the proximal surface 312.

[0041] In some embodiments, the prosthesis 300 can further include a modular bone auger 50 configured to be fitted onto the post 320 and abut against the proximal surface 312 of the base plate body 310.

[0042] Referring to FIG. 5A, a prosthesis 400 for attachment to a joint socket according to another embodiment is provided. The prosthesis 400 includes a base plate body 410 that is a monolithic metal structure. The base plate body 410 includes a distal surface 411, a proximal surface 412, and a post 420 extending from the proximal surface 412. In this embodiment, the post 420 includes a hollow, substantially cylindrical structure that defines an internal volume. The hollow, substantially cylindrical structure of the post 420 includes a plurality of openings 429 that provide access to the internal volume. The hollow cylindrical structure of the post 420 further includes an opening 428 at the proximal end of the post 420. The proximal end of the post 420 is the end that is farthest from the base plate body 410. The features of the base plate body 410 and the post 420 that provide orientation stability for a modular bone graft used with the prosthesis 400 are described herein.

[0043] In some embodiments, the monolithic metal structure of the base plate body 410 can be manufactured by an additive manufacturing process such as 3D printing. The post 420 is configured to be disposed within a complementary hole or recess prepared within the joint socket so as to be involved in attaching the prosthesis 400 to the joint socket.

[0044] In some embodiments, the hollow structure of the post 420 can have a substantially cylindrical shape. In some embodiments, the hollow structure of the post 420 can have a circular cylindrical shape. In some embodiments, the hollow structure of the post 420 can have a non-circular cylindrical shape.

[0045] In some embodiments, the baseplate body 410 can include an opening 428 that extends through the baseplate body 410 and along the entire length of the post 420, which provides access to the internal volume of the post 420. The hollow structure of the post 420 can similarly include a plurality of openings 429 that provide access to the internal volume of the post 420. The hollow post 420 can be implanted into the joint socket by press-fitting the hollow post 420 into the joint socket, which requires minimal bone preparation. When the prosthesis 400 is press-fitted into the joint socket, bone material fills the internal volume of the hollow post 420. After the prosthesis 400 is fully implanted, the plurality of openings 429 allow the bone tissue inside and outside the post 420 to grow to fill the voids with each other through the openings 429, as a result, the fixation of the prosthesis 400 within the bone is strengthened.

[0046] In some embodiments, the internal volume of the post 420 and the openings 429 can be filled with a porous material such as ADAPTIS™ by Wright Medical Group N.V. This filling of the internal volume can be achieved through the opening 428 at the proximal end of the post 420.

[0047] In some embodiments, the prosthesis 400 can further include a plurality of fins (fins similar to the fins 130 shown in the prosthesis embodiment 100) that extend radially from the post 420 at or near the location where the post intersects the proximal surface 412. In some embodiments, the plurality of fins can be disposed at the location where the post intersects the proximal surface 412 and can extend radially along the proximal surface 412. In some embodiments, the plurality of fins can be located near the location where the post intersects the proximal surface 412 but do not contact the proximal surface 412.

[0048] In some embodiments, the prosthesis 400 can further include a plurality of openings 440 provided between the post 420 and the periphery of the baseplate body. Each of the plurality of openings 440 extends from the distal surface 411 through the baseplate body 410 to the proximal surface 412 to receive one or more screws for assisting in fixing the prosthesis 400 in the articular fossa.

[0049] In some embodiments, the prosthesis 400 can further include a bone graft 50 configured to be fitted over the post 420 and abut against the proximal surface 412 of the baseplate body 410.

[0050] Referring to FIGS. 5B and 5C, a prosthesis 500 for attachment to a glenoid fossa according to another embodiment is provided. The prosthesis 500 includes a baseplate body 510 that is a monolithic metal structure. The baseplate body 510 includes a distal surface 511, a proximal surface 512, and a post 520 extending from the proximal surface 512. In this embodiment, the post 520 includes a hollow, substantially cylindrical structure that defines an internal volume. The hollow, substantially cylindrical structure of the post 520 includes a plurality of openings 529 that provide access to the internal volume. The hollow cylindrical structure of the post 520 further includes an opening 528 at the proximal end of the post 520. The proximal end of the post 520 is the end that is furthest from the baseplate body 510. Herein, the features of the baseplate body 510 and the post 520 that provide orientation stability for a modular type bone graft used with the prosthesis 500 are described.

[0051] In some embodiments, the monolithic metal structure of the baseplate body 510 can be manufactured by an additive manufacturing process such as 3D printing. The post 520 is configured to be disposed within a complementary hole or recess prepared within the glenoid fossa so as to be involved in attaching the prosthesis 500 to the glenoid fossa.

[0052] In some embodiments, the hollow structure of the post 520 can have a substantially cylindrical shape. In some embodiments, the hollow structure of the post 520 can have a circular cylindrical shape. In some embodiments, the hollow structure of the post 520 can have a non-circular cylindrical shape.

[0053] In some embodiments, the base plate body 510 may include an opening 528 that extends through the base plate body 510 and along the entire length of the post 520, which provides access to the internal volume of the post 520. The hollow structure of the post 520 can similarly include a plurality of openings 529 that provide access to the internal volume of the post 520. The hollow post 520 can be implanted into the articular fossa by press-fitting the hollow post 520 into the articular fossa, which requires minimal bone preparation. When the prosthesis 500 is press-fitted into the articular fossa, bone material fills the internal volume of the hollow post 520. After the prosthesis 500 is fully implanted, the plurality of openings 529 allow the bone tissue inside and outside the post 520 to grow to fill the voids with each other through the openings 529, as a result, the fixation of the prosthesis 500 within the bone is strengthened. As shown in FIG. 5C, when the hollow post 520 is press-fitted into the bone, the edge 521 of the hollow post 520 can be angled with respect to the longitudinal axis L of the post 520 so that the edge 521 can facilitate the first protrusion into the articular fossa.

[0054] In some embodiments, the internal volume of the post 520 and the openings 529 can be filled with a porous material such as Adaptis™ by Wright Medical Group N.V. This filling of the internal volume can be achieved through the opening 528 at the proximal end of the post 520.

[0055] In some embodiments, the prosthesis 500 can further include a plurality of fins (similar to the fins 130 shown in the prosthesis embodiment 100) that extend radially from the post 520 at or near the location where the post intersects the proximal surface 512. In some embodiments, the plurality of fins are disposed at the location where the post intersects the proximal surface 512 and can extend radially along the proximal surface 512. In some embodiments, the plurality of fins can be located near the location where the post intersects the proximal surface 512 but do not contact the proximal surface 512.

[0056] In some embodiments, the prosthesis 500 can further include a plurality of apertures 540 provided between the post 520 and the periphery of the base plate body. Each of the plurality of apertures 540 extends from the distal surface 511 through the base plate body 510 to the proximal surface 512 for receiving one or more screws to assist in fixing the prosthesis 500 in the joint socket.

[0057] In some embodiments, the prosthesis 500 can further include a bone graft 50 configured to be fitted onto the post 520 and abut against the proximal surface 512 of the base plate body 510.

[0058] Referring to FIGS. 6A - 6C, a prosthesis 800 for attachment to a joint socket according to another embodiment is provided. The prosthesis 800 includes a base plate body 810 that is a monolithic metal structure. The base plate body 810 includes a distal surface 811, a proximal surface 812, and a post 820 extending from the proximal surface 812.

[0059] In this embodiment, the proximal surface 812 and the post 820 include a porous surface portion that functions as a scaffold to promote bone ingrowth after the prosthesis 800 is implanted into the joint socket. As will be described later, the porous surface portion can also interact with a modular bone augment made from a bone graft to promote bone ingrowth. For example, as shown in FIG. 6B, the proximal surface 812 may be provided with a porous surface portion 812a that is a surface layer. As shown in the illustrated embodiment, the porous surface portion 812a can cover a substantial portion, but not all, of the proximal surface 812. The post 820 has an outer surface and includes a plurality of porous surface portions 827 that protrude from the outer surface of the post. Each of the raised porous surface portions 827 can extend along a substantial portion of the length of the post 820 separated by a space 829 as shown, but in other embodiments, the specific pattern and shape of the plurality of porous surface portions 827 can be varied. The raised porous surface portions 827 cooperate with a modular bone augment fitted onto the post 820 to provide orientation stability to the modular augment. In other words, the raised porous surface portions 827 cooperate with the mating surface of the modular bone augment to prevent the bone augment from rotating around the post 820. As will be further described below, the modular bone augment is configured to include a mating surface that cooperates with the raised porous surface portions 827.

[0060] The porous surface portions 812a and 827 can be formed from the same metallic material and can be formed simultaneously through an additive manufacturing process. The post 820 is configured to be disposed within a complementary hole or recess prepared within the joint socket so as to be involved in attaching the prosthesis 800 to the joint socket.

[0061] In some embodiments, the prosthesis 800 can further include a plurality of fins (similar to the fins 130 illustrated in the prosthesis embodiment 100) that extend radially from the post 820 at or near the location where the post intersects the proximal surface 812. In some embodiments, the plurality of fins are disposed at the location where the post intersects the proximal surface and can extend radially along the proximal surface. In some embodiments, the plurality of fins are located near the location where the post intersects the proximal surface but do not contact the proximal surface 812.

[0062] In some embodiments, the prosthesis 800 can further include a plurality of openings 840, 840a provided between the post 820 and the periphery of the base plate body, and the plurality of openings 840, 840a receive one or more bone screws for fixing the prosthesis 800 in the joint socket. Each of the plurality of openings 840, 840a extends from the distal surface 811 through the base plate body 810 to the proximal surface 812. In some embodiments, some or each of the plurality of openings can be configured differently to accommodate different types of screws. For example, in the illustrated embodiment, the two holes 840 are configured to receive multi-directional screws without washers, and the two holes 840a are configured to receive multi-directional screws with washers.

[0063] In some embodiments, the prosthesis 800 can include one or more additional openings or recesses 830 configured to receive an instrument used to hold the prosthesis 800. In the illustrated embodiment shown in FIG. 6A, the base plate body 810 is provided with two elliptical holes 830 for receiving the ends of clamps that can be used by a surgeon to hold the prosthesis during surgery, for example.

[0064] Referring to FIG. 6C, in some embodiments, the post 820 can be configured to include a hole or channel 828 that helps align an articulating component, such as the glenosphere component 700 (see FIG. 5D), with the prosthesis 800 when the articulating component is attached to the baseplate body 810. The structure and function of the channel 828 are the same as those of the channel 128 provided within the post 120 of the prosthesis embodiment 100 described above.

[0065] Similarly, the channel 828 can be a blind hole that extends to a predetermined depth within the post 820 such that a guide pin inserted into portion A of the channel 828 extends out of the channel 828 at the distal surface 811 by an appropriate amount to provide a guiding function for the articulating component 700.

[0066] In some embodiments, the channel 828 can extend through the entire length of the post 820 such that the channel 828 is open at the distal surface 811 and the proximal end of the post 820. In such embodiments, the channel 828 can be composed of two portions A and B, where portion A is the portion that opens at the distal surface 811 to receive the guide pin. Portion B can have a smaller diameter than portion A, such that the guide pin is too large to fit into the smaller diameter portion B. This configuration prevents the guide pin from exiting at the proximal end of the post 820 and entering the patient's bone. Further, with both ends of the channel 828 open, debris and fluid generated during the manufacturing process of drilling the channel 828 can be discharged.

[0067] Referring to FIGS. 7A - 7D, in some embodiments, the prosthesis 800 can further include a modular bone augment that is configured to fit over the post 820 and abut against the porous surface portion 812a of the baseplate body 810. As discussed above, the modular bone augment can be formed from a bone graft material or a porous metal material. In the example illustrated in FIGS. 7A - 7D, the bone augment 50A is a porous metal augment. The bone augment 50A is configured to have a hole for receiving the post 820 such that the bone augment 50A can fit over the post 820 and contact the porous surface 812a of the baseplate body 810. The inner surface of the hole of the bone augment 50A for receiving the post 820 forms a mating surface that cooperates with the raised porous surface portion 827 on the post 820 and is configured to provide orientation stability of the bone augment 50A by preventing or inhibiting the bone augment 50A from rotating around the post 820. For example, the inner surface of the hole of the bone augment 50A for receiving the post 820 can be configured to have a surface profile that is the negative (i.e., mirror image) of the raised porous surface portion 827 such that the bone augment 50A can be fitted over the post 820 by sliding longitudinally in a longitudinal direction parallel to the longitudinal axis L of the prosthesis 800 (see FIG. 6C). On the other hand, when the bone augment 50A is fitted over the post 820, the raised porous surface portion 827 and the complementary mating surface of the bone augment 50A fit together like the teeth of a gear, and the engagement between the raised porous surface portion 827 and the mating surface of the bone augment 50A prevents the bone augment 50A from rotating around the post 820.

[0068] The bone augment 50A can be configured to include one or more notches 57 for receiving screws that are to be inserted through holes 840, 840a. The bone augment 50A has a bone engaging surface 50A-1, and the contour of its surface is configured to have a shape that appropriately fills the defective void within the glenoid fossa. As described above, in some embodiments, the bone engaging surface 50A-1 of the bone augment 50A can be configured to have a patient-conforming surface contour for a particular patient's glenoid fossa condition.

[0069] In some embodiments, the post 820 can be configured to include a hole or channel 828 that can assist in aligning the joint component with the prosthesis 800 when the joint component is attached to the base plate body 810. The channel 828 extends into the post 820 from the distal surface 811 along the longitudinal axis L of the post 820. The structure of the channel 828 can be the same as the channel 128 within the post 120 of the prosthesis embodiment 100, and the channel 828 of the prosthesis 800 receives the guide pin in the same manner as described above for the channel 128 within the post 120.

[0070] According to another aspect of the present disclosure, FIGS. 7A - 7D also illustrate an example of another embodiment of a prosthesis for attachment to a glenoid fossa that incorporates an integrally formed metallic bone augment. According to such an embodiment, the prosthesis 800 includes a base plate body 810 that is a monolithic metallic structure, and the base plate body 810 includes a distal surface 811 and a proximal surface 812 opposite the distal surface. In this embodiment, the proximal surface 812 includes a bone augment portion 50A and a post 820 extending from the bone augment portion 50A. In this embodiment, the bone augment portion 50A and the post 820 are integrally formed as part of the monolithic metallic structure of the base plate body 810.

[0071] The metal bone augmentation portion 50A of the proximal surface 812 extends away from the distal surface 811 and defines a bone engaging surface 50A-1 that is spaced apart from the distal surface 811. The post 820 includes an outer surface and a plurality of porous surface portions 827 that can protrude from the outer surface of the post. In some embodiments, the porous surface portions 827 can be coplanar with the outer surface of the post 820.

[0072] In some embodiments of the prosthesis 800 having an integrally incorporated metal bone augmentation portion 50A, the bone augmentation portion 50A is a porous structure. In some embodiments, the plurality of porous surface portions 827 can be formed as structures that protrude from the surface of the post 820 and extend longitudinally along a substantial portion of the length of the post 820. Each of the raised porous surface portions 827 can extend along a substantial portion of the length of the post 820 separated by a space 829 as shown, but in other embodiments, the specific pattern and shape of the plurality of porous surface portions 827 can be varied.

[0073] Referring to FIG. 7C, the bone engaging surface 50A-1 is oriented at an oblique angle with respect to the distal surface 811 of the base plate body 810. In some embodiments, the oblique angle can be between 10 and 30 degrees. In some embodiments, the oblique angle can be between 15 and 25 degrees.

[0074] In some embodiments, the bone engaging surface 50A-1 is a non-planar surface. In some embodiments, the bone engaging surface 50A-1 is a spherical surface. In some embodiments, the spherical surface has a radius of curvature within the range of 30 mm to 50 mm. In some embodiments where the bone engaging surface 50A-1 is a spherical surface, the spherical surface 50A-1 is oriented at an oblique angle of 10 degrees to 30 degrees with respect to the distal surface 811. In some embodiments, the oblique angle can be between 15 and 25 degrees.

[0075] Referring to FIG. 7C, in the case of the bone engaging surface 50A-1 having a spherical curvature, the angled orientation of the surface is defined as the angular orientation of the edge E with respect to the distal surface 811 as viewed from the side as shown in FIG. 7C. The edge E is defined as the edge where the bone engaging surface 50A-1 intersects the side surface 50A-2 of the bone augmentation portion 50A.

[0076] In some embodiments of the prosthesis 800 having an integrally incorporated metallic bone augmentation portion 50A, a plurality of openings 840, 840a can be provided between the post 820 and the periphery of the base plate body, and each of the plurality of openings can extend from the distal surface 811 through the base plate body 810 to receive one or more screws up to the proximal surface 812. In some embodiments, the prosthesis 800 can further include one or more additional openings or recesses 830 configured to receive an instrument used to hold the prosthesis 800. In the illustrated embodiment shown in FIG. 7B, the base plate body 810 is provided with two oval holes 830 for receiving the ends of clamps that a surgeon can use, for example, to hold the prosthesis during surgery.

[0077] In some embodiments, the post 820 can have a longitudinal axis and can include a channel 828 that extends from the distal surface 811 into the post and along the longitudinal axis L of the post. The structure of the channel 828 can be the same as the channel 128 in the post 120 of the prosthesis embodiment 100, and the channel 828 of the prosthesis 800 receives a guide pin in the same manner as described above for the channel 128 in the post 120.

[0078] In some embodiments, the porous metal structure referred to in the present disclosure is a metal structure formed by additive manufacturing (e.g., 3D printing). An example of such a porous metal material is the ADAPTIS™ material by Wright Medical Group N.V.

[0079] Referring to FIG. 5D, each of the prosthesis embodiments 100, 100A, 200, 300, 400, 500, and 800 can further include an articulating component 700 configured to removably couple to a baseplate body 110, 210, 310, 410, 510, 810. The articulating component 700 can be an anatomical articulating component that replaces an anatomical joint socket surface, or a reverse type articulating component. In FIG. 5D, the illustrated embodiment of the articulating component 700 is a reverse type articulating component that includes a convex articular surface 710. The articulating component can be configured to fit onto the baseplate body 110, 210, 310, 410, 510, or 810 and include a recess 720 configured to form a friction lock engagement with the respective peripheral surfaces 113, 213, 313, 413, 513, and 813 of the baseplate bodies 110, 210, 310, 410, 510, and 810. In some embodiments, the recess 720 can have an inner surface, and the inner surface and the corresponding peripheral surfaces 113, 213, 313, 413, 513, and 813 on the respective baseplate bodies 110, 210, 310, 410, 510, 810 can be configured to form a mechanical taper system. In other words, each of the peripheral surfaces 113, 213, 313, 413, 513, 813 forms a conical male member of a mechanical taper system, and the inner surface of the recess 720 forms a corresponding female socket member of the mechanical taper system. An example of such a mechanical taper system can have a Morse taper surface. The articulating component can be formed from metal, polymer, or a combination of metal and polymer, depending on the particular application.

[0080] Devices, kits, systems, and methods have been described with respect to exemplary embodiments, but are not limited thereto. Rather, the appended claims are to be construed broadly to include other variations and embodiments of the devices, kits, systems, and methods, which can be made by those skilled in the art without departing from the scope of equivalents of the devices, kits, systems, and methods.

Claims

**Claim 1** A prosthesis for attachment to a glenoid fossa, which is a monolithic metal structure and has a distal surface and a proximal surface, a post extending from the proximal surface, and a baseplate body comprising a plurality of fins extending radially from the post at or near the location where the post intersects the proximal surface, comprising the prosthesis. **Claim 2** The prosthesis according to claim 1, wherein the plurality of fins are arranged at the location where the post intersects the proximal surface and extend radially along the proximal surface. **Claim 3** The prosthesis according to claim 1, wherein the plurality of fins are arranged near the location where the post intersects the proximal surface but do not contact the proximal surface. **Claim 4** further comprising a plurality of openings provided between the post and the periphery of the baseplate body, each of the plurality of openings extending through the baseplate body from the distal surface to the proximal surface for receiving one or more screws, the prosthesis according to claim 1. **Claim 5** The prosthesis according to claim 4, further comprising at least one screw configured to advance through at least one of the plurality of openings. **Claim 6** The prosthesis according to claim 1, further comprising an augement fitted on the post and configured to abut against the proximal surface of the baseplate body. **Claim 7** The prosthesis according to claim 6, wherein the augement can be formed from a metal material or a bone graft. **Claim 8** The prosthesis according to claim 1, wherein the proximal surface is configured to abut against the glenoid fossa. **Claim 9** The prosthesis according to claim 1, further comprising an articulating component configured to removably couple to the baseplate body. **Claim 10** The articulating component and the baseplate body are configured to be removably coupled to each other by a mechanical taper system, the baseplate body comprising a peripheral surface configured as a male conical member of the mechanical taper system, and the articulating component comprising a recess having an inner surface configured as a corresponding female socket of the mechanical taper system, the prosthesis according to claim 9. **Claim 11** The prosthesis according to claim 9, wherein the articulating component is a reverse shoulder component. **Claim 12** The prosthesis according to claim 9, wherein the joint component is an anatomical shoulder component.

13. The prosthesis according to claim 1, wherein the post has a generally cylindrical shape with a diameter that gradually decreases in the proximal direction.

14. The prosthesis according to claim 1, wherein the post has a longitudinal axis and includes a channel that extends from the distal surface into the post and extends along the longitudinal axis of the post.

15. A prosthesis for attachment to a glenoid fossa, comprising a monolithic metal structure and a distal surface and a proximal surface, and a post extending from the proximal surface, the post having a tapered conical shape with a taper angle of 5 to 30 degrees, whereby its diameter decreases in the proximal direction, the post, and a plurality of fins provided at the tip of the post and extending radially from the post, and a base plate body including the same.

16. The prosthesis according to claim 15, further comprising a plurality of second sets of fins that extend radially from the post at or near the location where the post intersects the proximal surface.

17. The prosthesis according to claim 16, wherein the plurality of second sets of fins are disposed at the location where the post intersects the proximal surface and extend radially along the proximal surface.

18. The prosthesis according to claim 15, wherein the plurality of second sets of fins are disposed near the location where the post intersects the proximal surface but do not contact the proximal surface.

19. Further comprising a plurality of openings provided between the post and the periphery of the base plate body, each of the plurality of openings extending from the distal surface to the proximal surface through the base plate body for receiving one or more screws.

20. The prosthesis according to claim 15, further comprising an auger fitted onto the post and configured to abut against the proximal surface of the base plate body.

21. The prosthesis according to claim 20, wherein the auger can be formed from a metal material or a bone graft.

22. The prosthesis according to claim 15, further comprising a joint component configured to be removably coupled to the base plate body.

23. The joint component and the base plate body are configured to be removably coupled to each other by a mechanical taper system, The base plate body includes a peripheral surface configured as a male conical member of the mechanical taper system, and the joint component includes a recess having an inner surface configured as a corresponding female socket of the mechanical taper system. The prosthesis according to claim 22.

24. The prosthesis according to claim 22, wherein the joint component is a reverse shoulder component.

25. The prosthesis according to claim 22, wherein the joint component is an anatomical shoulder component.

26. A prosthesis for attachment to a glenoid fossa, A monolithic metal structure, and A distal surface and a proximal surface, and A post extending from the proximal surface, the post having a cylindrical outer shape and including a wire frame structure defining an internal volume configured as a porous structure. The base plate body including the post, The prosthesis comprising.

27. Furthermore, the proximal surface is composed of a layer configured as a porous structure. The prosthesis according to claim 26.

28. The cylindrical outer shape of the wire frame structure is a circular cylinder. The prosthesis according to claim 26.

29. The cylindrical outer shape of the wire frame structure is a non-circular cylinder. The prosthesis according to claim 26.

30. The prosthesis according to claim 26, further including a plurality of fins extending radially from the post at or near the location where the post intersects the proximal surface.

31. The prosthesis according to claim 30, wherein the plurality of fins are disposed at the location where the post intersects the proximal surface and extend radially along the proximal surface.

32. The prosthesis according to claim 30, wherein the plurality of fins are disposed near the location where the post intersects the proximal surface but do not contact the proximal surface.

33. Further including a plurality of openings provided between the post and the periphery of the base plate body, Each of the plurality of openings extends through the base plate body from the distal surface to the proximal surface for receiving one or more screws. The prosthesis according to claim 26.

34. The prosthesis according to claim 26, further comprising an augment configured to be fitted on the post and abut against the proximal surface of the base plate body.

35. The prosthesis according to claim 34, wherein the augment is formed from a metallic material or a bone graft.

36. The prosthesis according to claim 26, further comprising an articular component configured to be removably coupled to the base plate body.

37. The articular component and the base plate body are configured to be removably coupled to each other by a mechanical taper system, The base plate body comprises a peripheral surface configured as a male conical member of the mechanical taper system, and the articular component comprises a recess having an inner surface configured as a corresponding female socket of the mechanical taper system. The prosthesis according to claim 36.

38. The prosthesis according to claim 26, wherein the articular component is a reverse shoulder component.

39. The prosthesis according to claim 26, wherein the articular component is an anatomical shoulder component.

40. The post has a longitudinal axis and includes a channel that extends from the distal surface into the post and extends along the longitudinal axis of the post. The prosthesis according to claim 26.

41. A prosthesis for attachment to a glenoid fossa, which is a monolithic metal structure, and a distal surface and a proximal surface, and a post extending from the proximal surface, the post including a hollow structure defining an internal volume, the post and, a base plate body comprising comprising The prosthesis, wherein the hollow structure includes a plurality of openings providing access to the internal volume.

42. The internal volume of the hollow structure can be filled with a porous material, The prosthesis according to claim 41, wherein the porous material promotes ingrowth of bone after the prosthesis is implanted into a patient.

43. The prosthesis according to claim 41, wherein the hollow structure of the post has a substantially cylindrical shape.

44. The prosthesis according to claim 41, wherein the hollow structure of the post has a circular cylindrical shape.

45. The prosthesis according to claim 41, wherein the hollow structure of the post has a non-circular cylindrical shape.

46. The prosthesis according to claim 41, further comprising an opening extending through the base plate body that provides access to the internal volume.

47. The prosthesis according to claim 41, further comprising a plurality of fins extending radially from the post at or near the location where the post intersects the proximal surface.

48. The prosthesis according to claim 47, wherein the plurality of fins are disposed at the location where the post intersects the proximal surface and extend radially along the proximal surface.

49. The prosthesis according to claim 47, wherein the plurality of fins are disposed near the location where the post intersects the proximal surface but do not contact the proximal surface.

50. Further comprising a plurality of openings provided between the post and the periphery of the base plate body, each of the plurality of openings extending through the base plate body from the distal surface to the proximal surface for receiving one or more screws. The prosthesis according to claim 41.

51. The prosthesis according to claim 41, further comprising an augument fitted on the post and configured to abut against the proximal surface of the base plate body.

52. The prosthesis according to claim 51, wherein the augument can be formed from a metallic material or a bone graft.

53. The prosthesis according to claim 41, further comprising an articular component configured to be removably coupled to the base plate body.

54. The articular component and the base plate body are configured to be removably coupled to each other by a mechanical taper system, The base plate body comprises a peripheral surface configured as a male conical member of the mechanical taper system, and the articular component comprises a recess having an inner surface configured as a corresponding female socket of the mechanical taper system. The prosthesis according to claim 53.

55. The prosthesis according to claim 53, wherein the articular component is a reverse type shoulder component.

56. The prosthesis according to claim 53, wherein the articular component is an anatomical shoulder component.

57. A prosthesis for attachment to a glenoid fossa, being a monolithic metallic structure, and a distal surface and a proximal surface, A post extending from the proximal surface, the post comprising an outer surface and a plurality of porous surface portions protruding from the outer surface of the post, the post, and a base plate body comprising the post. The prosthesis comprising the same. **Claim 58** The prosthesis according to claim 57, wherein the post has a length, and the plurality of raised porous surface portions extend longitudinally along a substantial portion of the length of the post. **Claim 59** The prosthesis according to claim 57, further comprising a layer configured as a porous structure. **Claim 60** The prosthesis according to claim 57, further comprising a plurality of fins extending radially from the post at or near the location where the post intersects the proximal surface. **Claim 61** The prosthesis according to claim 60, wherein the plurality of fins are disposed at the location where the post intersects the proximal surface and extend radially along the proximal surface. **Claim 62** The prosthesis according to claim 60, wherein the plurality of fins are disposed near the location where the post intersects the proximal surface but do not contact the proximal surface. **Claim 63** Further comprising a plurality of openings provided between the post and the periphery of the base plate body, Each of the plurality of openings extends through the base plate body from the distal surface to the proximal surface to receive one or more screws, the prosthesis according to claim 57. **Claim 64** The prosthesis according to claim 57, further comprising an augument fitted on the post and configured to abut against the proximal surface of the base plate body. **Claim 65** The prosthesis according to claim 57, further comprising an articulating component configured to be removably coupled to the base plate body. **Claim 66** The articulating component and the base plate body are configured to be removably coupled to each other by a mechanical taper system, The base plate body comprises a peripheral surface configured as a male conical member of the mechanical taper system, and the articulating component comprises a recess having an inner surface configured as a corresponding female socket of the mechanical taper system, the prosthesis according to claim 65. **Claim 67** The prosthesis according to claim 65, wherein the articulating component is a reverse shoulder component. **Claim 68** The prosthesis according to claim 65, wherein the joint component is an anatomical shoulder component.

69. The prosthesis according to claim 65, wherein the post has a longitudinal axis and includes a channel that extends from the distal surface into the post and extends along the longitudinal axis of the post.

70. A prosthesis for attachment to a glenoid fossa, which is a monolithic metal structure and includes a distal surface and a proximal surface opposite the distal surface, the proximal surface defining a bone engagement surface that extends away from and is spaced from the distal surface, the proximal surface and a post extending from the bone augment, the post having an outer surface and a plurality of porous surface portions, the post and, a base plate body comprising comprising the prosthesis.

71. The prosthesis according to claim 70, wherein the plurality of porous surface portions protrude from the outer surface of the post.

72. The prosthesis according to claim 70, wherein the bone augment is a porous structure.

73. The prosthesis according to claim 70, wherein the post has a length, and the plurality of raised porous surface portions extend longitudinally along a substantial portion of the length of the post.

74. The prosthesis according to claim 70, wherein the bone engagement surface is oriented at an oblique angle with respect to the distal surface of the base plate body.

75. The prosthesis according to claim 74, wherein the oblique angle is between 10 degrees and 30 degrees.

76. The prosthesis according to claim 74, wherein the oblique angle is between 15 degrees and 25 degrees.

77. The prosthesis according to claim 74, wherein the bone engagement surface is a non-planar surface.

78. The prosthesis according to claim 77, wherein the bone engagement surface is a spherical surface.

79. The prosthesis according to claim 78, wherein the spherical surface has a radius of curvature in the range of 30 mm to 50 mm.

80. The prosthesis according to claim 78, wherein the oblique angle is between 10 degrees and 30 degrees.

81. The prosthesis according to claim 78, wherein the oblique angle is between 15 degrees and 25 degrees.

82. further comprising a plurality of openings provided between the post and the periphery of the base plate body, The prosthesis according to claim 70, wherein each of the plurality of openings extends from the distal surface to the proximal surface through the base plate body for receiving one or more screws.

83. The prosthesis according to claim 70, further comprising an articulating component configured to be removably coupled to the base plate body.

84. The articulating component and the base plate body are configured to be removably coupled to each other by a mechanical taper system. The prosthesis according to claim 83, wherein the base plate body comprises a peripheral surface configured as a male conical member of the mechanical taper system, and the articulating component comprises a recess having an inner surface configured as a corresponding female socket of the mechanical taper system.

85. The prosthesis according to claim 83, wherein the articulating component is a reverse shoulder component.

86. The prosthesis according to claim 83, wherein the articulating component is an anatomical shoulder component.

87. The prosthesis according to claim 83, wherein the post has a longitudinal axis and includes a channel extending from the distal surface into the post and extending along the longitudinal axis of the post.

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