Porous augments

Abstract

A porous augment (100) is disclosed. The porous augment comprises a body (102) defining one or more bone contacting surfaces (BCS) and an implant contacting surface (BCS), the implant contacting surface including one or more surface features (110) for receiving fixation material, such as bone cement, the one or more bone contacting surfaces defining a biological interface surface arranged and configured to facilitate bone in-growth or bone on-growth with surrounding bone.

Description

Attorney Docket No.: 8178.6019WO POROUS AUGMENTS AND METHODS OF IMPLANTING THE SAME CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This is a non-provisional of, and claims the benefit of the filing date of, pending U.S. provisional patent application number 63 / 534,546, filed August 24, 2023, entitled “Porous Augments and Methods of Implanting the Same” the entirety of which application is incorporated by reference herein. FIELD OF THE DISCLOSURE

[0002] The present disclosure relates to orthopedic porous structures and / or augments and corresponding methods of use, and more particularly to a porous augment arranged and configured to be implanted separately from, and prior to, an orthopedic surgical implant to prevent fixation material such as, for example, bone cement, grout, etc.) from contacting biological interface surfaces between the patient’s bone and the porous augment. BACKGROUND OF THE DISCLOSURE

[0003] Orthopedic surgical implants may be used, for example, to stabilize an injury, to support a bone fracture, to fuse a joint, and / or to correct a deformity. Orthopedic surgical implants may be permanently attached to the patient’s bone and may be attached to the bone at various locations, including implanted within an intramedullary canal of the bone. Orthopedic surgical implants include, for example, intramedullary (“IM”) nails, knee implants including tibial and femoral components, acetabular systems includingAttorney Docket No.: 8178.6019WO femoral components and acetabular cups, shoulder implants, bone plates, etc. Orthopedic surgical implants are generally machined or molded from isotropic materials, such as metals including, for example, titanium, titanium alloys, stainless steel, cobalt-chromium alloys, and tantalum.

[0004] During implantation of an orthopedic surgical implant, proper attachment of the orthopedic surgical implant to the patient’s bone is necessary to prevent, for example, loosening. Common mechanisms for attaching orthopedic surgical implants to patient’s bone include use of mechanical fasteners (e.g., screws,), fixation materials or adhesives (e.g., bone cements, grouts, etc.), porous coatings to permit biological implant fixation (e.g., bone in-growth or bone on-growth), or combinations thereof.

[0005] Biological implant fixation is a widely sought after means of attachment due to improved long-term clinical history of patients’ post-operation. However, it is often difficult to achieve sufficient biological fixation due to various challenges. These challenges can include, but are not limited to, the manufacturing of implants capable of biological fixation, the surgical method of bone preparation and implant placement, as well as various challenges amongst clinical indications for differing anatomical regions.

[0006] Generally speaking, current porous structures for biological fixation may be attached to, or integrally formed with, the orthopedic surgical implant (e.g., the orthopedic surgical implant may include a porous coating or layer formed thereon, or may be fixedly coupled or assembled with a porous structure). As such, the porous structure is implanted into the patient’s bone simultaneously with the orthopedic surgical implant.Attorney Docket No.: 8178.6019WO

[0007] Alternatively, in connection with orthopedic knee systems, an orthopedic cone including a porous coating may be used. The orthopedic cone is implanted separately from the orthopedic surgical implant. The intramedullary canal of the patient’s tibia or femur is prepared and the cone is inserted. Thereafter, the intramedullary stem of the tibia or femoral implant is inserted into the cone and bone (e.g., the intramedullary stem of the tibia or femoral implant is inserted through a bore formed in the cone and into the intramedullary canal of the patient’s bone).

[0008] When utilizing hybrid fixation techniques (e.g., when utilizing fixation materials (e.g., cement) in some areas of the implant and biological fixation (e.g., porous structures to facilitate bone in-growth or on-growth) in other areas of the implant) difficulties may arise. In one implantation, for example, during implantation of an IM stem associated with the tibial or femoral component, the intramedullary canal of the patient’s bone is often prepared to receive the cone as previously described. The cone may be positioned within the prepared intramedullary canal. Thereafter, the implant is implanted through a bore formed in the cone and into the patient’s bone. Fixation material may be positioned between the inner surface of the cone and the outer surface of the stem. As such, generally speaking, flow of fixation material onto the biological fixation interface (e.g., flow of fixation material on the bone contacting surface between the outer surface of the cone and the bone) is prevented since the cone is implanted before the implant and fixation material. However, one disadvantage of using cones is that cones often rely on press-fit contact between the outer surface of the cone and the patient’s bone. In actuality, proper achievement of press-fits rely on infinite contact between the outer surface of the cone and the patient’s bone. If the cone does not provideAttorney Docket No.: 8178.6019WO some level of pressure against the adjacent boney surface, the adjacent boney surface may deteriorate over time. Thus, it is important that the surgeon precisely prepare the defective area of the patient’s bone to ensure a tight fit between the cone and the bone. Such contact is difficult to achieve and, in general, the cone typically contacts the patient’s bone along either the tapered outer surface of the cone or along an upper collar of the implant.

[0009] In other implementations, porous structures are provided as monoblocs or structural constructs along with the implant. That is, the porous structures are integrally formed with, or fixedly attached to, the implant. Thus, the implant is fixated (e.g., cemented) and implanted simultaneously with the porous structure. For example, porous members or wedges may be used along the distal, posterior, and / or anterior aspects of the patient’s femur. The wedges may be coupled to the femoral implant. However, one disadvantage of using wedges associated with the implant is that during implantation of the implant, fixation material may flow onto the porous structure or wedge. In this scenario, the fixation material creates a barrier along the biological interface surfaces between the outer surface of the porous wedge or structure and the patient’s bone thereby inhibiting biological fixation. Fixation material creates a barrier along the biological interface surfaces that prevent the patient’s bone from growing into the porous structure formed in the porous structure.

[0010] As such, when utilizing porous structures to facilitate biological implant fixation in combination with fixation material, it is important to ensure that the fixation material is not positioned between the porous structure and the patient’s bone.Attorney Docket No.: 8178.6019WO

[0011] Thus, it would be beneficial to provide a porous structure that enables biological fixation while overcoming a number of known challenges including, for example, a porous structure that enables fixation material to be utilized while preventing the fixation material from reaching the biological interface surface. It is with respect to these and other considerations that the present disclosure may be useful. SUMMARY OF THE DISCLOSURE

[0012] This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended as an aid in determining the scope of the claimed subject matter.

[0013] A porous structure and / or augment (e.g., a porous augment), and corresponding methods of use are disclosed. In some examples, a porous augment is disclosed. The porous augment may include a body comprising one or more segments assembled together. The body including bone contacting surfaces and non-bone contacting surfaces such as, for example, implant contacting surfaces. The bone contacting surfaces are arranged and configured to enable biological fixation (e.g., to enable bone in-growth or on-growth) with the surrounding bone.

[0014] In any preceding or subsequent example, the non-bone contacting surface(s) includes one or more surface features such as, for example, pockets, grooves, recesses, depressions, etc. formed therein for receiving, holding, storing, etc. a fixationAttorney Docket No.: 8178.6019WO material such as, for example, a grout, bone cement, etc. to facilitate securement of the augment to a subsequently implanted orthopedic surgical implant.

[0015] In any preceding or subsequent example, the porous augment includes one or more solid structures such as, for example, a barrier layer between the non-bone contacting surfaces (e.g., the implant contacting surface) and the bone contacting surfaces to prevent the extrusion or flow of the fixation material from the non-bone contacting surfaces to the bone contacting surfaces.

[0016] In any preceding or subsequent example, the porous augment may include one or more initial fixation mechanisms or features. For example, the bone-contacting surfaces may include one or more initial fixation mechanisms or features. In some examples, the initial fixation mechanism or feature includes one or more spikes, barbs, projections, or serrations to facilitate initial fixation to the patient’s bone.

[0017] In any preceding or subsequent example, the porous augment includes an initial fixation mechanism or feature arranged and configured to achieve a press-fit within a pocket formed in the patient’s bone. That is, the sides of the porous augment may be configured to provide a press-fit with the inner sides of the pocket formed in the patient’s bone. In some examples, the porous augment may be hammered into the pocket.

[0018] In any preceding or subsequent example, the porous augment includes one or more mechanical fixation features arranged and configured to receive, for example, a mechanical fastener or screw, to facilitate initial fixation to the patient’s bone.Attorney Docket No.: 8178.6019WO

[0019] In some examples, a method of implanting an orthopedic surgical implant using a fixation material and a porous augment is disclosed. The method includes positioning a porous augment against a patient’s bone, the porous augment including one or more bone contacting surfaces arranged and configured to facilitate biological fixation with the patient’s bone, and an implant contacting surface. Next, a surgeon may apply a fixation material such as, for example, a grout, bone cement, etc. onto one of the orthopedic surgical implant, the patient’s bone including an exposed surface (e.g., non- bone contacting surface) of the porous augment, or a combination thereof. Subsequently, implanting the orthopedic surgical implant onto the patient’s bone including positioning the orthopedic surgical implant into contact with the exposed surface of the porous augment such that, fixation material resides between the exposed surface of the porous augment and the orthopedic surgical implant (e.g., a portion of the orthopedic implant contacts the implant contacting surface of the porous augment). Thus arranged, the fixation material is prevented from contacting the biological interface surface, which was established prior to application of the fixation material.

[0020] In any preceding or subsequent example, wherein positioning the porous augment against the patient’s bone comprises inserting the porous augment into a boney cavity of the patient’s bone.

[0021] In any preceding or subsequent example, wherein inserting the porous augment into a boney cavity of the patient’s bone further comprises forming one or more pockets in a patient’s bone, and inserting the porous augment into the pocket so that one or more bone contacting surfaces of the porous augment contact one or more innerAttorney Docket No.: 8178.6019WO surfaces of the pocket formed in the patient’s bone thereby establishing the biological interface surface between the porous augment and the patient’s bone.

[0022] In any preceding or subsequent example, application of the fixation material onto the non-bone contacting or exposed surface of the porous augment is used to adjust an overall height of the porous augment to substantially match an outer surface of the patient’s bone.

[0023] Examples of the present disclosure provide numerous advantages. For example, the present disclosure provides porous augments and corresponding methods of use, which prevent flow of the fixation material onto the biological interface surfaces between the augment and the patient’s bone thereby facilitating improved biological fixation. In addition, by managing the flow of fixation material relative to the augment, the fixation material can be used to adjust the overall height of the augment to accommodate variations in height of the patient’s bone.

[0024] Further features and advantages of at least some of the examples of the present disclosure, as well as the structure and operation of various examples of the present disclosure, are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] By way of example, specific examples of the disclosed device will now be described, with reference to the accompanying drawings, in which:Attorney Docket No.: 8178.6019WO

[0026] FIG.1 illustrates a perspective view of an example of a porous augment in accordance with one or more features of the present disclosure;

[0027] FIG.2 illustrates various views of an exemplary method of implanting the porous augment shown in FIG.1 in accordance with one or more features of the present disclosure;

[0028] FIG.3 illustrates various views of an alternate exemplary method of implanting the porous augment shown in FIG.1 in accordance with one or more features of the present disclosure;

[0029] FIG.4 illustrates various views of an alternate exemplary method of implanting the porous augment shown in FIG.1 in conjunction with an orthopedic surgical implant in accordance with one or more features of the present disclosure;

[0030] FIG.5 illustrates a schematic representation of an alternate example of a porous augment in accordance with one or more features of the present disclosure;

[0031] FIG.6 illustrates a schematic representation of an alternate example of a porous augment in accordance with one or more features of the present disclosure;

[0032] FIG.7 illustrates a schematic representation of an alternate example of a porous augment in accordance with one or more features of the present disclosure;

[0033] FIG.8 illustrates various schematic representations of alternate examples of a porous augment in accordance with one or more features of the present disclosure;Attorney Docket No.: 8178.6019WO

[0034] FIG.9 illustrates various schematic representations of alternate examples of a porous augment in accordance with one or more features of the present disclosure;

[0035] FIG.10 illustrates various schematic representations of alternate examples of a porous augment or segments of a porous augment in accordance with one or more features of the present disclosure;

[0036] FIG.11 illustrates various schematic representations of alternate examples of a porous augment or segments of a porous augment in accordance with one or more features of the present disclosure;

[0037] FIG.12 illustrates a schematic representation of an alternate example of a porous augment in accordance with one or more features of the present disclosure;

[0038] FIG.13 illustrates various views of an alternate exemplary method of implanting a porous augment shown in conjunction with an orthopedic surgical implant in accordance with one or more features of the present disclosure;

[0039] FIG.14 illustrates a schematic representation of an alternate example of a porous augment in accordance with one or more features of the present disclosure;

[0040] FIG.15 illustrates a schematic representation of an alternate example of a porous augment in accordance with one or more features of the present disclosure;

[0041] FIG.16 illustrates a schematic representation of an alternate example of a porous augment in accordance with one or more features of the present disclosure; andAttorney Docket No.: 8178.6019WO

[0042] FIG.17 illustrates various views of exemplary instrumentation that can be used to form a pocket in a patient’s bone to receive a porous augment in accordance with one or more features of the present disclosure.

[0043] The drawings are not necessarily to scale. The drawings are merely representations, not intended to portray specific parameters of the disclosure. The drawings are intended to depict various examples of the disclosure, and therefore are not considered as limiting in scope. In the drawings, like numbering represents like elements. DETAILED DESCRIPTION

[0044] Various features or the like of an orthopedic porous structure, surface cone, or augment (referred to herein as a porous augment) will now be described more fully herein with reference to the accompanying drawings, in which one or more features of the porous augment will be shown and described. It should be appreciated that the various features may be used independently of, or in combination, with each other. It will be appreciated that the porous augment as disclosed herein may be embodied in many different forms and may selectively include one or more concepts, features, or functions described herein. As such, the porous augment should not be construed as being limited to the specific examples set forth herein. Rather, these examples are provided so that this disclosure will convey certain features to those skilled in the art.

[0045] In accordance with one or more features of the present disclosure, a porous augment is provided. As will be described in greater detail herein, the porous augment is arranged and configured with one or more features to facilitate hybrid fixationAttorney Docket No.: 8178.6019WO wherein the porous augment is arranged and configured to facilitate biological fixation with the surrounding, contacted bone and a fixation material is used in connection with the subsequent implantation of an orthopedic surgical implant. As used herein, the fixation material may be any suitable fixation material now known or hereafter developed such as, for example, a grout, bone cement, or the like. Thus arranged, the porous augment is configured to enable, for example, cement fixation with the subsequently implanted orthopedic surgical implant. The porous augment, along with the corresponding method of use, is arranged and configured to prevent the fixation material from contacting the biological interface surface (e.g., the bone interface surface between the porous augment and the patient’s bone), thus enabling long-term biological fixation (e.g., bone in-growth or on-growth).

[0046] In some examples, an exemplary method of implanting an orthopedic surgical implant is provided. The method includes positioning, inserting, etc. (terms used interchangeably herein) a porous augment into a defect, cavity, void, recess, pocket, or the like so that one or more outer surfaces of the porous augment contact one or more surfaces of the patient’s bone thereby establishing the biological interface surface between the porous augment and the patient’s bone. In some examples, the method includes forming one or more pockets in the patient’s bone. Next, the fixation material may be positioned onto the implant and / or patient’s bone including an exposed surface (e.g., a non-bone contacting surface or also referred to herein as an implant contacting surface) of the porous augment. Positioning the implant onto the patient’s bone including positioning the implant into contact with the fixation material and / or the exposed surface of the porous augment. Fixation material is prevented from contacting the biologicalAttorney Docket No.: 8178.6019WO interface surface (e.g., the bone contacting surfaces between the porous augment and the patient’s bone).

[0047] That is, in accordance with one or more features of the present disclosure, by inserting or positioning the porous augment into or onto the patient’s bone before application of the fixation material, the biological interface surface has been established between the porous augment and the patient’s bone thereby eliminating the possibility that fixation material may flow onto and adhere to the porous augment in-between the bone contacting surfaces of the porous augment and the patient’s bone.

[0048] In some examples, placement of the fixation material on the non-bone contacting surface (e.g., exposed surface) of the porous augment such as, for example, the exposed superior or inferior surface of the porous augment, is used to adjust an overall height of the porous augment and fixation material to substantially match an outer surface of the patient’s bone thereby providing an improved connection with the subsequently implanted orthopedic surgical implant. That is, the fixation material may be used to accommodate, make-up, adjust, etc. for any variations between the depth of the boney defect (e.g., pocket) and the height of the porous augment (e.g., fixation material can be used to adjust the overall height of the porous augment).

[0049] In some examples, the porous augment may be arranged and configured as an inlay design. For example, the porous augment is arranged and configured to be received within a boney defect, a cavity, a void, a pre-formed pocket, etc. formed in the patient’s bone. Alternatively, in some examples, the porous augment may be arranged and configured as an onset design arranged and configured to reside on the patient’s boneAttorney Docket No.: 8178.6019WO (e.g., the porous augment may be configured as a thin, plate-like structure arranged and configured to lay on the outer surface of the patient’s bone). In either scenario, in some examples, the porous augment is arranged and configured with sides or surfaces to contact the patient’s bone (e.g., biological interface surfaces to promote bone in-growth or on-growth) and exposed sides or surfaces such as, for example, implant facing surfaces arranged and configured to interact with the implant via, for example, the fixation material.

[0050] The porous augment may be manufactured from any suitable material or combination of materials now known or hereafter developed. For example, the porous augment may be manufactured from calcium phosphate or the like, to facilitate bony in- growth or on-growth. In some examples, the porous augment may be manufactured to be completely porous. In some examples, the porous augment may be completely solid. In some examples, the porous augment may be porous and solid. For example, as will be described in greater detail herein, the porous augment may include one or more pockets formed in the exposed surfaces thereof (e.g., non-bone contacting surfaces). Thus arranged, in some examples, the porous augment may be manufactured as a porous, solid structure with one or more pockets in the exposed surfaces thereof (e.g., porous augment to implant interface surface) for receiving, holding, storing, etc. fixation material. In addition, and / or alternatively, the porous augment may be manufactured with one or more solid structures therein (e.g., a barrier layer) to prevent the extrusion of fixation material (e.g., the porous augment may include a solid interior portion disposed within the porous portions of the porous augment to prevent the extrusion or flow of fixation material). Additional details on the incorporation of the solid interior portion are disclosed in U.S.Attorney Docket No.: 8178.6019WO Patent No.10,568,741, issued on February 25, 2020, entitled Implant Components and Methods, the entire disclosure of which is incorporated herein by reference. Thus arranged, the porous augment is arranged and configured to manage the flow of fixation material to prevent, or at least substantially inhibit, fixation material from flowing completely through the porous augment.

[0051] The porous augment may be manufactured by any suitable manufacturing process now known or hereafter developed. For example, the porous augment may be manufactured from additive manufacturing techniques, three-dimensional printing, laser or electron beam techniques, or the like. In some examples, the porous augment may include a roughened surface, an additive printed surface, a titanium plasma-sprayed porous coating, or any combination thereof. In some examples, the porous coating may be printed, sprayed, or sintered onto the bone facing surfaces of the porous augment. For example, the porous coating may be formed by plasma spraying titanium, cobalt chrome, zirconium, oxidized zirconium, or stainless steel over the bone facing surfaces of the porous augment. Alternatively, the porous coating could be a hydroxyapatite or other similar coating known in the art to enhance bony in-growth. In some examples, the entire porous augment could be coated. Alternatively, only sections or portions of the porous augment may be coated. In addition, and / or alternatively, the porous augment may include one or more roughened surfaces to facilitate enhanced bony in-growth or on- growth.

[0052] In some examples, as will be described in greater detail herein, the porous augment may be provided with, or be formed into, generic shapes that may be, forAttorney Docket No.: 8178.6019WO example, provided in a system or kit, which surgeons can use to form or assembly the desired shape. As such, the porous augments need not be system specific (e.g., designed specifically for one type of surgical procedure such as, for example, cones for knee procedures, cups for acetabular replacement or hip procedures, etc.).

[0053] In some examples, the porous augment includes one or more surface features such as, for example, one or more recesses, openings, voids, cavities, grooves, reliefs, cutouts, etc. (terms used interchangeably herein without the intent to limit or distinguish) to enable a fixation material (e.g., a cement, a grout, etc.) to be positioned therein. That is, for example, the porous augment may include one or more recesses formed on the exposed surface (e.g., on the non-bone contacting surface) for receiving, storing, holding, etc. the fixation material. Thus arranged, post-implantation of the porous augment, the porous augment may include one or more recesses for receiving the fixation material on the exposed surface thereof to facilitate, for example, adjustment of the overall height of the porous implant and for holding fixation material for coupling to the subsequently implanted orthopedic surgical implant.

[0054] In addition, and / or alternatively, the porous augment may include one or more initial fixation features such as, for examples, spikes, barbs, projections, serrations, etc., (terms used interchangeably herein without the intent to limit or distinguish) to facilitate initial fixation to the patient’s bone. For example, as will be described in greater detail below, in some examples, the porous augment may include one or more protrusions, spikes, or barbs that extend beyond or from the outer surfaces of the porous augment such as, for example, from one or more of the bone-contacting surfaces) . TheAttorney Docket No.: 8178.6019WO porous augment may be impacted into position such as, for example, within the boney cavity or pocket formed in the patient’s bone to secure the position of the porous augment relative to the patient’s bone. In addition, and / or alternatively, the porous augment may be arranged and configured to achieve a press-fit within the boney cavity or pocket formed in the patient’s bone. In addition, and / or alternatively, the porous augment may include one or more features such as, for examples, one or more holes, to provide mechanical fixation (e.g., screw fixation, nail fixation, etc.) to facilitate initial fixation to the patient’s bone, to the implant, soft tissue, etc. That is, as will be appreciated by one of ordinary skill in the art, time is needed to achieve proper biological fixation. In order to maintain the position of the porous augment (e.g., to prevent the porous augment from moving relative to the patient’s bone) until biological fixation is achieved, the porous augment may include one or more initial fixation features as will be described herein.

[0055] In some examples, the porous augment may be used to simultaneously augment a pocket or defect in a patient’s bone, and a subsequently implanted orthopedic surgical implant. Thus arranged, the porous augment can be used for void filling, bone reinforcement, building to a joint line, positioning of implants, modifying implant shape, etc. Thus arranged, in some examples, the porous augments may be used in a revision surgery to fill a void in the patient’s bone as a result of removing the previously implanted orthopedic implant. As such, the porous augment may be used to rebuild the patient’s bone to receive a subsequently implanted orthopedic implant.

[0056] In accordance with one or more features of the present disclosure, as described herein, the porous augment is arranged and configured to be implantedAttorney Docket No.: 8178.6019WO separately and apart from the implantation of a subsequently implanted orthopedic implant. That is, the porous augment is independently implanted into or onto the patient’s bone. For example, the porous augment may be initially implanted onto an outer surface of the patient’s bone and / or implanted within a void, a pocket, or boney defect in, or on, the patient’s bone. The porous augment includes a porous surface, region, or body (terms used interchangeably herein) for contacting the surfaces of the patient’s bone to facilitate biological fixation. The porous augment also includes a non-bone contacting surface or implant contacting surface arranged and configured to receive a fixation material (e.g., bone cement, grout, etc.) for subsequently contacting and affixing to the subsequently implanted orthopedic implant. In some examples, the application of the fixation material may be used to adjust the height of the porous augment relative to the surrounding bone (e.g., the surgeon may adjust the amount and / or height of fixation material to accommodate for different heights between the porous augment and the surrounding bone to enable improved alignment between the implant and the patient’s bone). In any event, application of fixation material may be accomplished post-implantation of the porous augment but prior to implantation of the orthopedic implant. As such, the surgeon can rebuild the patient’s bone as desired prior to implanting the orthopedic implant.

[0057] That is, the porous augment is arranged and configured to facilitate biological fixation with the surrounding (e.g., contacted) bone and, for example, cement fixation with the contacted subsequently implanted orthopedic implant. Thus, the porous augment can be used to fill an existing defect or void in the patient’s bone, to fill a pre- formed pocket formed in the patient’s bone, and / or be overlaid onto the patient’s bone. As such, the present disclosure should not be limited to any particular area or bone. ForAttorney Docket No.: 8178.6019WO example, the porous augment can be used to repair defects in a total knee or hip arthroplasty, a shoulder arthroplasty, trauma procedures, etc. As such, the present disclosure should not be limited to any particular surgical procedure or part of the patient’s body unless explicitly claimed.

[0058] With reference to FIG.1, an example of a porous augment in accordance with one or more features of the present disclosure is illustrated. As illustrated, in some examples, the porous augment 100 includes a body 102, such as, for example, a porous body, a partially porous body, etc. In addition, and / or alternatively, the body 102 may be solid. As illustrated, the body 102 may have a three-dimensional rectangular prism or cuboid shape, and thus may include a top surface, a bottom surface, and lateral side surfaces, although this is but one configuration and the body 102 may have any shape including, for example, square, trapezoidal, circular, conical, etc. In some examples, the body 102 may be configured as a thin, plate-like structure arranged and configured to lay on the outer surface of the patient’s bone, as will be described in greater detail below. In addition, as will be described in greater detail, in some examples, the body 102 may comprise of a plurality of segments assembled together to create the approximate desired shape.

[0059] For example, when used as an inlay design, the porous augment 100 is arranged and configured to be received within a pocket P formed in the patient’s bone B. Alternatively, the porous augment 100 may be arranged and configured to fill an existing boney void or defect. Alternatively, and / or in addition, the porous augment 100 may be arranged and configured to lay onto the patient’s bone. As such, one or more porousAttorney Docket No.: 8178.6019WO augments 100 can be selectively positioned, formed, fitted, mended, etc. to rebuild the patient’s bone B during, for example, a trauma procedure, a revision surgery, a knee or hip procedure, etc.

[0060] In some examples the body 102 of the porous augment 100 is arranged and configured with bone contacting surfaces BCS and non-bone contacting surfaces such as, for example, implant contacting surfaces ICS. The bone contacting surfaces BCS are arranged and configured to facilitate biological fixation to permit bone in-growth or on-growth. As such, the bone contacting surfaces BCS define a biological interface surface between the bony surfaces of the patient’s bone B and the porous augment 100. For example, as illustrated, the bone contacting surfaces BCS are illustrated with holes representing a porous in-growth surface. The bone contacting surfaces BCS may be manufactured, configured, etc. by any suitable means now known or hereafter developed.

[0061] The non-bone contacting surface or implant contacting surface ICS may be arranged and configured to interact with, receive, store, hold, contain, or the like (terms used interchangeably herein without the intent to limit) a fixation material (e.g., bone cement, grout, etc.). For example, the implant contacting surfaces ICS may include one or more surface features such as, for example, pockets, grooves, or the like 110 arranged and configured to receive the fixation material. For example, as illustrated, the implant contacting surfaces ICS may include three grooves, although this is but one configuration and the implant contacting surface may include more or less grooves, holes, recesses, etc. having the same or different configurations. In addition, and / or alternatively, the body 102 of the porous augment 100 may include one or more internalAttorney Docket No.: 8178.6019WO structures or layers (e.g., barrier layer) arranged and configured to prevent the fixation material positioned on the implant contacting surfaces ICS from flowing through the body 102 of the porous augment 100 as previously mentioned.

[0062] With additional reference to FIG.2, in some examples of use, the patient’s bone B such as, for example, the patient’s femur, although this is but one example and it is envisioned that the porous augment 100 may be used in other areas of the patient’s body, is prepared by using appropriate instrumentation to form a pocket P in the patient’s bone B, although this is but one example and the porous augment 100 may be used in an existing defect or void in the patient’s bone, and / or be overlaid onto an outer surface of the patient’s bone. As illustrated, instruments may be used to form the pocket P in the patient’s bone B. Thereafter, the porous augment 100 may be positioned within the pocket P independent of the orthopedic surgical implant I inset onto the bone B. The porous augment 100 may be pressed or hammered into the pocket P formed in the patient’s bone B after prep.

[0063] With reference to FIG.3, which similarly to FIG.2, illustrates instrumentation 155 such as, for example, a cutting instrument or pocket forming tool, to prepare a pocket P in the patient’s bone B, the instruments may be impacted into the patient’s bone B to create the pocket P for the porous augment 100. Once again, while the porous augment 100 is illustrated in connection with a patient’s knee bone B, this technique is not bone or joint specific. Porous augments 100 of various geometries may be prepped and positioned with manual instrumentation. In addition, this can be done independent of placing the orthopedic surgical implant I.Attorney Docket No.: 8178.6019WO

[0064] With reference to FIG.4, for example, during a knee procedure, the surgeon may detect a defect D in the patient’s bone B (e.g., femur). For example, when placing a femoral trial 200, the surgeon may notice a defect, a space, a gap, etc. D between the femoral trial 200 and the patient’s bone B. In some examples, using an instrument 210 such as, for example, a gauge or depth / height gauge, a cutting instrument or pocket forming tool, a guide, or other suitable instrument, the surgeon may determine a gauge or height of the defect D. Thereafter, the surgeon may remove the femoral trial 200, and using the instrument or other suitable instrument 210, form a pocket P in the patient’s bone B. Next, the surgeon may select or construct an appropriately sized porous augment 100 and insert the porous augment 100 into the pocket P formed in the patient’s bone B. Inserting the porous augment 100 into the pocket P formed in the patient’s bone B defining the biological interface surface (i.e., in this example, the bottom and lateral side surfaces defining the biological interface surface). Subsequently, fixation material may be positioned on the exposed implant contacting surface ICS. Finally, the femoral implant I may be positioned on the patient’s bone B. The fixation material adhering the porous augment 100 to the inner surface of the femoral implant I.

[0065] Thus arranged, in accordance with one or more features of the present disclosure, by inserting the porous augment 100 into the pocket P, a boney defect, and / or on to the patient’s bone before application of the fixation material and positioning of the orthopedic surgical implant I, the biological fixation surface between the body 102 of the porous augment 100 and the surfaces of the patient’s bone B are established. Thus arranged, concerns over the fixation material flowing in-between the porous augment 100 and the patient’s bone B are eliminated, or at least greatly reduced. In addition, inAttorney Docket No.: 8178.6019WO accordance with one or more features of the present disclosure, application of the fixation material may be used to adjust the height of the porous augment 100 and fixation material to accommodate for variations in the patient’s bone B thereby providing an improved surface for engaging the inner surface of the orthopedic surgical implant I. That is, for example, the surgeon may adjust the amount and / or height of fixation material to accommodate for different heights between the implant contacting surface of the porous augment and fixation material and the remaining bone surfaces associated with the patient’s bone.

[0066] As illustrated in FIG.4, instruments may be used to assess the depth of the defect in the patient’s bone B, prepare the bone B including forming the pocket P, and positioning of the porous augment 100. In some examples, the porous augment 100 can be inset or proud of the patient’s bone B. The instruments can measure the gap between the orthopedic surgical implant I and the patient’s bone B in combination. The porous augment 100 is composed of porous in-growth features and cement interface features.

[0067] In accordance with one or more features of the present disclosure, the porous augment 100 may be provided in a wide variety of configurations and may be used in a wide variety of applications to supplement a bony defect. For example, the porous augment may be configured as a thin, plate-like structure arranged and configured to lay on the outer surface of the patient’s bone. In one preferred example, the porous augment may be configured as a rectangular or square shaped plate to rebuild the patient’s bone. For example, the porous augment may be configured to be positioned onto the outer surface of a patient’s bone (e.g., onset design with the porous augment 100Attorney Docket No.: 8178.6019WO being configured to lay on, wrap, etc. the outer surface of the patient’s bone). In some examples, the porous augment may, for example, have a total height of 2 to 3mm including a first layer having, for example, 500 to 1,500 microns, to facilitate porous in- growth, a second layer arranged and configured to receive fixation material for coupling to a subsequently implanted orthopedic implant, and a barrier layer positioned between the first and second layers to prevent flow of the fixation material into the first layer. In some examples, the porous augment may be cuttable so that, for example, surgeons can cut the augment to length and / or shape as needed.

[0068] In some examples, one or both of the porous augment and orthopedic implant may include one or more features to facilitate compression between the porous augment and the subsequently implanted orthopedic implant. For example, one of, or both, the porous augment and the implant may include a stepped surface (similar to that illustrated in FIG.6), bumps, projections, etc. (e.g., the inner surface of the implant may include a stepped surface for contacting the fixation material and / or porous augment). Thus arranged, the fixation material positioned between the implant and porous augment remains in compression as opposed to shear.

[0069] In addition, and / or alternatively, for example, with reference to FIG.5, and as previously mentioned, the porous augment 100 may include initial fixation features 120 to secure the position of the porous augment 100 relative to the patient’s bone B until biological fixation is achieved. In some examples, as illustrated, the porous augment 100 may include spikes that can either be sized to cover the entire surface, or sized to fit together to cover a targeted surface area. As illustrated, various, smallerAttorney Docket No.: 8178.6019WO segments of a porous augment 100 may be used and positioned to cover the entire targeted area, for example, the independent segments may be arranged and configured to mate with each other to enable a surgeon to selectively select and construct an augment of the appropriate size and shape to cover the targeted area. As such, a kit can be provided which contains various porous augments 100 containing optional initial fixation features 120 (e.g., spikes) to enable a surgeon to selectively construct an augment to cover the targeted area.

[0070] With reference to FIG.6, and as previously mentioned, in some examples, the body 102 of the porous augment 100 may comprise a plurality of segments, which may be coupled together. For example, as illustrated, the body 102 may comprise of first and second segments, although this is but one configuration and any number of segments may be used including, for example, three, four, or more. In addition, the plurality of segments comprising the body 102 may be coupled together via a coupling mechanism 130 such as, for example, a mechanical coupling mechanism such as, for example, a threaded porous screw or porous nail, although this is but one configuration and the various segments may be coupled together by any suitable mechanism now known or hereafter developed.

[0071] As illustrated, in some examples, the porous augment 100 may comprise of stepped segments utilizing screw fixation. The segments can be used together or individually dependent on clinical need. As schematically illustrated, the porous nail can be used in place of the porous screw. The nail could be the connection mechanism withAttorney Docket No.: 8178.6019WO tapered connections present in the segments of the porous augment 100 for a press fit means of fixation.

[0072] With reference to FIG.7, in some examples, the porous augment 100 may be formed in the shape of a lug, a nail, or a tack including a body portion and an enlarged head portion. In some examples, the tack could be configured to be fully porous. Alternatively, the tack could be configured to be partially porous. The enlarged head portion may include a diameter larger than the diameter of the body portion. Thus arranged, the body portion is arranged and configured to be inserted into the pocket P and thus acts, as a void filling portion. Thus arranged, the tack supplements the patient’s bone B to fill voids, strengthen bone, or provided a stable fixation surface for additional orthopedic surgical implants I. The tack can be inserted so that it resides inset or proud of the bone surface.

[0073] With reference to FIG.8, and as previously mentioned, in some examples, the porous augment 100 is arranged and configured to be used to fill defects in the patient’s bone B. As illustrated, the porous augment 100 includes one or more surface features such as, for example, pockets, grooves, etc.110, as previously mentioned, for receiving, holding, etc. fixation material therein. In addition, as illustrated, the porous augment 100 includes bone contacting surfaces BCS with initial fixation spikes. The porous augment 100 can be used to supplement planar surfaces, non-planar surfaces, or a combination thereof.

[0074] With reference to FIG.9, in some examples, the porous augment 100 may be arranged and configured to be inset into a pocket P formed in good quality boneAttorney Docket No.: 8178.6019WO or used to supplement poor quality bone (e.g., defects may or may not be present in the patient’s bone B). In some examples, the porous augments 100 may be arranged and configured with specific shapes for different regions of the patient’s body. Alternatively, in some examples, the porous augment 100 may be arranged and configured with a generic shape such as, for example, a relatively small rectangular or square shape, configured to be used in a wide variety of locations for any clinical indication. As illustrated in FIG.9, the porous augment 100 may include a variety of geometric shapes, surface features 110 arranged and configured to receive fixation material, porous features, and initial fixation features 120. Thus arranged, the porous augment 100 is arranged and configured to establish biological fixation when interfacing bone, while having an augment to implant fixation by means of, for example, fixation material (e.g., bone cement) or other fixation mechanism such as, for example, screw fixation, taper fixation, etc., or a combination thereof. As configured the porous augments 100 are not system specific and could be used with potentially any orthopedic surgical implant I and / or in any bone B of the patient’s body.

[0075] With reference to FIGS.10 and 11, and as previously mentioned, in some examples, the porous augment 100 may comprise of multiple segments that can be assembled together into any desirable and / or suitable size and shape. For example, as illustrated, the porous augment 100 may comprise multiple segments interconnected together to form the targeted biological fixation region(s) for the appropriate clinical indication. In some examples, the various segments of the porous augment can have planar or non-planar shapes and surfaces. The various augments can include beams or ribs, tapers for press-fit, interconnecting projections and recesses, etc.Attorney Docket No.: 8178.6019WO

[0076] With reference to FIG.12, in some examples, the porous augment 100 may be configured with a non-planar shape such as, for example, with a non-planar bone interface surface and / or non-planar implant interface surface, as such the porous augment 100 may be referred to as a non-planar porous augment. The non-planar porous augment may be manufactured with similar composition of solid and porous features as those mentioned previously. In addition, the non-planar porous augment can be manufactured from multiple segment to form the targeted biological fixation region(s) for the appropriate clinical indication.

[0077] With reference to FIG.13, in some examples, one or more porous augments 100 can be used in connection with implantation of a tibial implant I. The porous augments 100 can be implanted adjacent the patient’s bone B near cortical wall to achieve enhanced fixation, thus providing enhanced clinical performance, when possible, to position in these ways based on various clinical indications and other factors. Thereafter, the tibial implant I can be implanted. As illustrated, and as previously described, the porous augments 100 reside between portions of the patient’s bone B and the subsequently implanted orthopedic surgical implant I.

[0078] With reference to FIG.14, a schematic illustration of a porous augment 100 is shown. The porous augment 100 including solid and porous features or regions. As illustrated, the porous augment 100 may include barbs such as, for example, porous barbs, for initial fixation and robust rigidity from loosening, which is a common failure mode for conventional porous implants. In alternate examples, the barbs could be replaced with separate devices such as, for example, trauma screws.Attorney Docket No.: 8178.6019WO

[0079] With reference to FIGS.15 and 16, schematic illustrations of porous augments 100 are shown. As illustrated in FIG.15, the porous augment 100 may be configured as a partially inset design arranged and configured to be partially received within a pocket P formed in the patient’s bone B. As illustrated in FIG.16, the porous augment 100 may be configured as a completely inset design arranged and configured to be completely received within a pocket P formed in the patient’s bone B. As illustrated, the porous augment 100 may be configured with initial fixation features 120 and surface features 110 arranged and configured to receive fixation material.

[0080] With reference to FIG.17, various views of exemplary instruments for preparing and forming the pocket P in the patient’s bone B are illustrated. As shown, in some examples, the pocket P may include an irregular geometric shape. Guides 150 can be impacted into the patient’s bone B to initially locate the pocket P. Thereafter, cutting instruments 152 can be used to remove the patient’s bone B thereby forming the pocket P. In some examples, the guide can mate with a guide plate 154 to prepare the patient’s bone B using a punch. Alternatively, as illustrated, cutting instruments 152 can be used and guided through a tower 156. However, these are just some examples, and the pocket P may be formed using any suitable mechanism now known or hereafter developed.

[0081] As generally described herein, while the porous augment 100 has been generally shown and described in connection with a knee implant I including, for example, a femoral component and / or a tibial component, the present disclosure is not so limited and the porous augment 100 may be used in connection with any surgicalAttorney Docket No.: 8178.6019WO procedure including, for example, hip replacement, IM nails, shoulder surgeries, trauma, etc.

[0082] Moreover, it should be appreciated, that the porous augment 100 may be used in connection with any type of surgery including, for example, primary surgeries wherein an orthopedic surgical implant is implanted for the first time or revision surgeries wherein a previously implanted orthopedic surgical implant is removed and replaced with another orthopedic surgical implant.

[0083] In accordance with one or more features of the present disclosure, the porous augments 100 may be used to, for example, augment or supplement bone. Augmenting bone includes void filling (e.g., ability to fill bone defects, voids, mend fractures, subluxations etc.), reinforcing, building or rebuilding to a joint line, etc. As such, contrary to conventional augments, which are typically used to modify implant shapes and sizes, porous augments 100 according to the present disclosure can be used to modify or fill a patient’s bone B. Alternatively, however, it is envisioned that the porous augments 100 of the present disclosure may also be used to augment or supplement implants. For example, augmenting or supplementing implants can be used to position implants, build to a joint line, modify implant shape, etc.

[0084] In accordance with one or more features of the present disclosure, by augmenting between the patient’s bone B and the implant, an improved augment to implant interface and augment to bone interface (e.g., biological interface) for fixation is achievable. Additionally, this allows for optimization of both the augment to implant interface and augment to bone interface.Attorney Docket No.: 8178.6019WO

[0085] In accordance with one or more features of the present disclosure, in some examples, the porous augment 100 may be configured as a planar augment with planar bone contacting and / or implant contacting surfaces. Alternatively, the porous augment 100 may be configured as a non-planar augment with non-planar bone contacting and / or implant contacting surfaces. As such, in some examples, the porous augment 100 is not limited to implant geometry or implant type. Rather, in accordance with one or more features of the present disclosure, the porous augment 100 may be configured with generic shapes and sizes that may be used to modify the implant geometry. As such, enhanced anatomical bone fixation and implant positioning is possible. Moreover, by providing porous augments 100 with non-planar surfaces, enhanced fit to bone is achievable. In addition, non-planar augments enable improved bone conservation and enhanced fixation through better anatomical fit.

[0086] In accordance with one or more features of the present disclosure, in some examples, the porous augments 100 are arranged and configured with an inset design, and thus are arranged and configured to be positioned within, for example, a boney defect or a pocket P formed in the patient’s bone B. Alternatively, in some examples, the porous augment 100 is arranged and configured with an onset design arranged and configured to sit on or reside on the patient’s bone B, or some combination thereof. Thus arranged, in some examples, the porous augment 100 may be configured as either an inlay design or an onset design thereby providing surgeons with the ability to utilize the same porous augment 100 in either application. Inset designs allow for enhanced fixation, void filling, etc. while on lay design facilitate rebuilding the joint line.Attorney Docket No.: 8178.6019WO

[0087] In accordance with one or more features of the present disclosure, in some examples, by enabling biological fixation, the porous augments 100 can be used to facilitate soft tissue attachment during a tibial tubercle osteotomy. However, this is but one use. Given the non-bone specific and non-system specific geometries, the porous augments 100 can be utilized in virtually any location within a patient’s body. Thus arranged, in accordance with one or more features of the present disclosure, the porous augment 100 enables utilization in a wide range of bones and shapes, which can be used to reinforce fractures. Furthermore, the porous augments 100 can be positioned in optimized locations where there is good bone quality to span and reinforce these fractures. Moreover, the porous augment 100 can be used in areas to prevent probable fractures from occurring by reinforcing prophylactically.

[0088] In accordance with one or more features of the present disclosure, the porous augments 100 may be provided in generic shapes (e.g., shapes not particular to any particular area of the patient’s bone B and / or any particular shape corresponding to a particular system or implant). Thus, for example, the porous augments 100 may be used in any area of the patient’s body (e.g., porous augments 100 are configured for use in any cortical or cancellous region of the patient’s body, i.e., femur, tibia, patella, shoulder, ankle, ilium, ischium, ulna, talus, etc.). In addition, and / or alternatively, the porous augments 100 may be used in connection with any implant system (e.g., porous augments 100 are not configured for use with any particular implant system).

[0089] Thus arranged, in some examples, the porous augments 100 may be used individually or collectively with interactive features between segments of the porousAttorney Docket No.: 8178.6019WO augment 100. As such, surgeons can assemble the porous augment 100 from individual segments to form a desired or appropriate shape for a surgeon’s particular application. As such, the surgeon is able to assemble the porous augment 100 to achieve the desired surface coverage, which provides numerous additional advantages including: reduced skews and associated costs, providing a simplified surgical technique while simultaneously offering an enhanced clinical outcome due to customized implant placement and position specific to address patient needs, ability of the porous augments 100 to interlock could enhance fixation across deficient bone while utilizing the structure of the good quality bone, creating increased surface area for porous in-growth resulting in a larger surface area for enhanced fixation.

[0090] In accordance with one or more features of the present disclosure, numerous advantages can be achieved including enhanced clinical performance over the long term and reduced costs in manufacturing. That is, for example, the porous augments 100 can be used to optimize anatomical fixation through strategic placement near cortical bone. In addition, and / or alternatively, the porous augments 100 facilitate increased longevity of numerous orthopedic systems through enhanced biological fixation. In addition, the porous augments 100 enable simplified surgical techniques and methods, which can be used across multiple implant systems. With simpler and faster surgical approaches, reduced operation times can be achieved, which could present cost savings through lower infection rates and lower healthcare costs.

[0091] Systems or kits of porous augments 100 can be provided, allowing surgeons to pick and / or assemble porous augments 100 to optimize location thereof (e.g.,Attorney Docket No.: 8178.6019WO place porous augments 100 adjacent cortical bone, avoid poor bone quality, etc.) in order to achieve enhanced performance. This can be independent of implant placement. In addition, manual instruments, robotic instruments, patient matched instruments, and / or computer assisted instruments can be used to assess planar or non-planar surfaces to fit the porous augment 100.

[0092] While the present disclosure refers to certain examples, numerous modifications, alterations, and changes to the described examples are possible without departing from the sphere and scope of the present disclosure, as defined in the appended claim(s). Accordingly, it is intended that the present disclosure not be limited to the described examples, but that it has the full scope defined by the language of the following claims, and equivalents thereof. The discussion of any example is meant only to be explanatory and is not intended to suggest that the scope of the disclosure, including the claims, is limited to these examples. In other words, while illustrative examples of the disclosure have been described in detail herein, it is to be understood that the inventive concepts may be otherwise variously embodied and employed, and that the appended claims are intended to be construed to include such variations, except as limited by the prior art.

[0093] The foregoing discussion has been presented for purposes of illustration and description and is not intended to limit the disclosure to the form or forms disclosed herein. For example, various features of the disclosure are grouped together in one or more examples or configurations for the purpose of streamlining the disclosure. However, it should be understood that various features of the certain examples orAttorney Docket No.: 8178.6019WO configurations of the disclosure may be combined in alternate examples, or configurations. Any example or feature of any section, portion, or any other component shown or particularly described in relation to various examples of similar sections, portions, or components herein may be interchangeably applied to any other similar example or feature shown or described herein. Additionally, components with the same name may be the same or different, and one of ordinary skill in the art would understand each component could be modified in a similar fashion or substituted to perform the same function.

[0094] Moreover, the following claims are hereby incorporated into this Detailed Description by this reference, with each claim standing on its own as a separate example of the present disclosure.

[0095] As used herein, an element or step recited in the singular and proceeded with the word “a” or “an” should be understood as not excluding plural elements or steps, unless such exclusion is explicitly recited. Furthermore, references to “one example” of the present disclosure are not intended to be interpreted as excluding the existence of additional examples that also incorporate the recited features.

[0096] The phrases “at least one,” “one or more,” and “and / or,” as used herein, are open-ended expressions that are both conjunctive and disjunctive in operation. The terms “a” (or “an”), “one or more” and “at least one” can be used interchangeably herein. All directional references (e.g., proximal, distal, upper, lower, upward, downward, left, right, lateral, longitudinal, front, back, top, bottom, above, below, vertical, horizontal, radial, axial, clockwise, and counterclockwise) are only used for identification purposes to aid the reader’s understanding of the present disclosure, and do not create limitations,Attorney Docket No.: 8178.6019WO particularly as to the position, orientation, or use of this disclosure. Connection references (e.g., engaged, attached, coupled, connected, and joined) are to be construed broadly and may include intermediate members between a collection of elements and relative to movement between elements unless otherwise indicated. As such, connection references do not necessarily infer that two elements are directly connected and in fixed relation to each other. All rotational references describe relative movement between the various elements. Identification references (e.g., primary, secondary, first, second, third, fourth, etc.) are not intended to connote importance or priority but are used to distinguish one feature from another. The drawings are for purposes of illustration only and the dimensions, positions, order and relative to sizes reflected in the drawings attached hereto may vary.

Claims

Attorney Docket No.: 8178.6019WO CLAIMS 1. A method of implanting an orthopedic surgical implant, comprising: positioning a porous augment against a patient’s bone, the porous augment including one or more bone contacting surfaces arranged and configured to facilitate biological fixation with the patient’s bone, and an implant contacting surface; applying fixation material onto the implant bone contacting surface; and implanting the orthopedic surgical implant onto the patient’s bone such that a portion of the orthopedic implant contacts the implant contacting surface of the porous augment.

2. The method of claim 1, wherein positioning the porous augment against the patient’s bone comprises inserting the porous augment into a boney cavity of the patient’s bone.

3. The method of claim 1, further comprising forming one or more pockets in a patient’s bone; and positioning the porous augment against the patient’s bone comprises inserting the porous augment into the pocket so that the one or more bone contacting surfaces of the porous augment contact one or more inner surfaces of the pocket thereby establishing a biological interface surface between the porous augment and the patient’s bone.

4. The method of claim 3, wherein the porous augment is sized and configured to achieve a press-fit within the pocket formed in the patient’s bone.Attorney Docket No.: 8178.6019WO 5. The method of claim 1, wherein application of the fixation material onto the implant bone contacting surface adjusts a combined overall height of the porous augment and fixation material to substantially match an outer surface of the surrounding patient’s bone.

6. The method of claim 1, wherein the implant contacting surface includes one or more surface features arranged and configured to receive the fixation material to facilitate coupling of the porous augment to the orthopedic surgical implant.

7. The method of claim 6, wherein the porous augment includes a barrier layer positioned between the implant contacting surface and the one or more bone contacting surfaces to prevent the extrusion of fixation material from the implant contacting surface to the one or more bone contacting surfaces.

8. The method of claim 1, wherein the porous augment further includes one or more initial fixation features.

9. The method of claim 1, wherein the fixation material is selected from one of a bone cement or a grout.

10. A porous augment comprising: a body defining one or more bone contacting surfaces and an implant contacting surface, the implant contacting surface including one or more surface features for receiving fixation material, the one or more bone contacting surfaces defining aAttorney Docket No.: 8178.6019WO biological interface surface arranged and configured to facilitate bone in-growth or bone on-growth with surrounding bone.

11. The porous augment of claim 10, wherein the body further comprises a barrier layer positioned between the implant contacting surface and the one or more bone contacting surfaces to prevent extrusion of the fixation material from the implant contacting surface to the one or more bone contacting surfaces.

12. The porous augment of claim 10, wherein the one or more surface features formed on the implant contacting surface includes one or more grooves or recesses arranged and configured to receive the fixation material.

13. The porous augment of claim 10, wherein the body is arranged and configured to be received within a void, a cavity, or a pocket in a patient’s bone so that the one or more bone contacting surfaces contact the patient’s bone to facilitate bone in- growth or bone on-growth, and the implant contacting surface is exposed to contact a surface of a separately implanted orthopedic implant.

14. The porous augment of claim 10, wherein the body includes a plate-like configuration so that the body can be positioned onto an outer surface of a patient’s bone.

15. The porous augment of claim 14, wherein the body has a rectangular or square shape, the body having a height of approximately 2 to 3mm.

16. The porous augment of claim 14, wherein the body is arranged and configured to be cuttable to an appropriate length.Attorney Docket No.: 8178.6019WO 17. The porous augment of claim 10, wherein the fixation material is selected from one of a bone cement or a grout.

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