Abstract: A modular humeral head resurfacing implant including a head, an anchoring stem, and a modular extended articulation flange. The head includes an exterior hemispherical articulating surface defining a terminating rim, an interior concave surface opposite to the exterior articulating surface, and a first coupling mechanism proximate to the terminating rim. The anchoring stem is coupled to the interior concave surface and extends along a stem axis that extends through an axial center of the head. The articulation flange includes a second coupling mechanism configured to cooperate with the first coupling mechanism to fasten the articulation flange to the head and an outer articulating surface that is curved along substantially its entire length and is substantially flush with the exterior hemispherical articulating surface when the articulation flange is fastened to the head.

Abstract: The system and method serves in facilitating replacement of comminuted bone fractures or portions thereof adjacent bone joints. The system and method employs a prosthesis to replace at least a portion of the comminuted bone fractures. The prosthesis serves in reproducing the articular surface of the portion or portions of the comminuted bone fractures that are replaced. In doing so, the prosthesis serves in restoring joint viability and corresponding articulation thereof.

Abstract: The present invention is directed to a prosthesis for an arthroplasty in a long bone and a methods for achieving a press fit of the metaphyseal element of the prosthesis into a metaphysis of the long bone and the extraction of the prosthesis when indicated. The prosthesis includes a metaphyseal element attached at a proximal end of a stem, the metaphyseal element of the prosthesis is configured to optimize placement of bone marrow about, and in some embodiments, within the metaphyseal element to achieve a press-fit in the metaphysis of the long bone. The prosthesis also includes one or more apertures formed in the joint base member of the prosthesis. Preferably each slot includes a frangible wall which is readily penetrated to accommodate passage of an osteotome of other tool to break the metaphyseal element free from bony in-growth that occurs against the metaphyseal element.

Abstract: A shock-absorbing shoulder replacement system has a glenoid cup suitable for affixing to the glenoid surface of a scapula, ahead positioned so as to bear against the glenoid cup, a rod affixed to or integral with the head on the side of the head opposite the glenoid cup, a humeral component having a shaft suitable for receipt by the humerus and having a portion extending outwardly of the humerus, and a resilient member cooperative between humeral component and the bead such that the head is resiliently mounted in relation to the humeral component. The portion of the humeral component has a receptacle therein suitable for receiving an end of the rod therein. The rod has a threaded surface that can be connected to a nut such that a distance between the head and the humeral component can be adjusted.

Abstract: A prosthesis may include a stem, a ball stud, an adaptor, and a head. The stem may include a longitudinal axis and a bore having a central axis that is angled relative to the longitudinal axis. The ball stud may include a cylindrical shaft and a ball end. The cylindrical shaft may be received in the bore of the stem. The adaptor may include a tapered outer surface and a ball socket rotatably receiving the ball end of the stud. The head may be rotatably supported by the adaptor and may include a semispherical articulating surface and a female taper rotatably receiving the tapered outer surface of the adaptor.

Abstract: A modular humeral head resurfacing implant including a head, an anchoring stem, and a modular extended articulation flange. The head includes an exterior hemispherical articulating surface defining a terminating rim, an interior concave surface opposite to the exterior articulating surface, and a first coupling mechanism proximate to the terminating rim. The anchoring stem is coupled to the interior concave surface and extends along a stem axis that extends through an axial center of the head. The articulation flange includes a second coupling mechanism configured to cooperate with the first coupling mechanism to fasten the articulation flange to the head and an outer articulating surface that is curved along substantially its entire length and is substantially flush with the exterior hemispherical articulating surface when the articulation flange is fastened to the head.

Abstract: A surgical process for resurfacing a head of a humerus has the steps of applying a jig over a surface of the head so as to define a separation line between the head and the humeral shaft, sawing along the separation line so as to separate the head and the humeral shaft so as to expose an end of the shaft, applying a resurface implant over an exterior surface of the head, and affixing the head having the resurface implant thereon onto the exposed end of the shaft. The head is shaped so as to smooth the exterior surface of the head prior to the step of applying the jig. A hole is formed through the head so as to extend into the shaft. A stem of the resurface implant extends through the hole in the head and into the hole in the shaft.

Abstract: A partial reverse shoulder prosthesis comprising a humeral stem and a variable angle tray comprising a plate including a through hole including at least two cutouts oriented horizontally across from one another, and a repositionable variable angle stem occupying at least a portion of an internal cavity defined by the through hole and comprising a first washer including threads at least partially defining a first opening, a post at least partially occupying the internal cavity, and a pin insertable into the first opening and having a threaded head sized to engage the threads of at least one of the first washer and the post; wherein the wall of the internal cavity is sized to retain the first washer and at least a portion of the post.

Abstract: A humerus implant includes a cup shaped body and a locking adapter. The cup shaped body has a center portion and a plurality of flexible first sidewall segments and second sidewall segments, with gaps between neighbored sidewall segments. The first sidewall segments have a plurality of locking fins while the second sidewall segments having a plurality of recesses and holes. The locking adapter has means for fixing the locking adapter to the cup shaped body and a locking ring for locking the sidewall segments into their final positions.

Abstract: A prosthesis may include a stem, an adaptor and a head. The stem may include a longitudinal axis. The adaptor may include a first taper having a first taper axis of symmetry. The head may be rotatably supported by the adaptor and may include a semispherical articulating surface defined by a central axis of symmetry that is angled relative to the first taper axis of symmetry. The head may be coupled to the first taper and may be positionable relative to the stem through relative rotation between the head and the stem about the first taper axis of symmetry to adjust a radial offset of the head relative to the longitudinal axis of the stem. The head may be adapted to be received in a glenoid cavity of a scapula.

Abstract: A prosthesis is provided and includes a central body having an outer surface and a longitudinal axis extending between a first end having an opening operable to receive an installation tool and a second end spaced apart from the first end. The outer surface extends between and connects the first end and the second end and defines the length of the central body. The prosthesis additionally includes a plurality of arms each attached to the outer surface of the central body and having an outer shape defined by a porous coating independent from a shape of the central body. The porous coating completely covers the outer surface of the central body between the first end and the second end.

Abstract: A prosthesis is provided and includes a central body having an outer surface and a longitudinal axis extending between a first end having an opening operable to receive an installation tool and a second end spaced apart from the first end. The outer surface extends between and connects the first end and the second end and defines the length of the central body. The prosthesis additionally includes a plurality of arms each attached to the outer surface of the central body and having an outer shape defined by a porous coating independent from a shape of the central body. The porous coating completely covers the outer surface of the central body between the first end and the second end.

Abstract: A prosthesis (20) for use in performing joint arthroplasty is provided. The prosthesis (20) is to be fitted to a long bone (3). The prosthesis includes a first body (22) having a first body articulating surface (24) defining a generally circular outer periphery (26) of the first body articulating surface (24). The first body (22) has a support surface (28) opposed to the articulating surface (24). The support surface (28) is adapted to receive the head of the long bone (3). The prosthesis (20) also includes a second body (30) operably associated with the first body (22). The second body (30) has a second body articulating surface (32) extending from a portion of the circular outer periphery (26) of the first body articulating surface (24). A tool kit for preparing a humerus to receive a prosthesis is also disclosed.

Abstract: A kit for use in performing joint arthroplasty, the kit including a prosthesis to be fitted to a long bone and a cutting guide. The cutting guide including a housing having an attachment mechanism adapted to couple the housing to the bone during arthroplasty and a wall defining a continuous path and a blade for cutting the bone, the blade fitting within and sliding along the continuous path such that the blade cuts the bone in a shape matching the second body articulating surface.

Abstract: A prosthesis is provided and may include a central body having a longitudinal axis and an opening that receives an installation tool. The prosthesis may additionally include a plurality of arms each including a solid body attached to the central body and a porous coating covering the solid body. The porous coating may provide each of the plurality of arms with an outer shape having a different shape than the solid body.

Abstract: A method for centering a stem of an implant at an implantation site. The method includes implanting at the implantation site the implant having a sleeve rigidly mounted to the stem of the implant, the stem extends through an interior area of the sleeve. The method further includes compressing the sleeve by applying force to the sleeve to expand a mesh portion of the sleeve outward from the stem and into engagement with sidewalls of the implantation site to thereby center the stem at the implantation site.

Abstract: A prosthetic glenoid component has a body having a concave bearing surface and a convex glenoid contacting surface. First and second pegs extend outwardly from adjacent respective first and second ends of the bone contacting surface of the body, the first and second pegs have portions with a first diameter at the bone contacting surface extending for a first length and a second diameter extending from the first diameter for a second length, the first diameter larger than the second diameter. A third peg extends outwardly from the bone contacting surface intermediate the first and second pegs. The third peg has a third diameter greater than the second diameter portion of the first and second pegs and a third length greater than the first length of the first diameter portion of the first and second pegs. The third length is less than the sum of the first and second lengths.

Abstract: A system for preparing an implant for implantation includes a trial implant including a first dialable component and a datum, a final implant including a second dialable component, and an instrument including (i) a base assembly configured to support the trial implant so that the datum is in a predetermined orientation, (ii) a fixture supported on the base assembly, the fixture including a domed element, and an alignment tool configured to engage the first dialable component when the trial implant is supported by said base assembly, and (iii) a locking assembly including a guide member defining a spherical surface for nested engagement with said domed element, the locking assembly configured to record the angular orientation of said alignment tool relative to said fixture with said alignment tool engaged with the first dialable component, and to replicate the recorded angular orientation with the alignment tool and a second dialable component.

Abstract: The system and method serves in facilitating replacement of comminuted bone fractures or portions thereof adjacent bone joints. The system and method employs a prosthesis to replace at least a portion of the comminuted bone fractures. The prosthesis serves in reproducing the articular surface of the portion or portions of the comminuted bone fractures that are replaced. In doing so, the prosthesis serves in restoring joint viability and corresponding articulation thereof.

Abstract: A two piece humeral component for use in joint arthroplasty which is adapted to be implanted into a joint and engaged by a socket component of the joint. The joint component includes a body having a first articulating surface and a second medial surface opposite the first articulating surface. The first articulating surface is adapted to be engaged by the socket and the second medial surface is adapted to be secured to mounting portion. The mounting portion has a first surface and a second medial surface. The first surface is adapted to be fixably engaged to the second mounting portion of the humeral component. The second medial surface is adapted to be secured to the humerus. A peg which has a first end adapted to engage a cavity found in the humerus is disposed on the mounting portion's second medial surface.

Abstract: The present disclosure relates to a stemless shoulder prosthesis comprising a fixation device for fixing the prosthesis to a resected humerous bone, the fixation device comprising a base portion and anchoring means the base portion having a distal side adapted to contact a resection plane of the bone and a proximal side for carrying a humeral head. The anchoring means are connected to the distal side of the base portion and adapted to fix the prosthesis to the bone. The anchoring means define a central axis perpendicular to the distal side of the base portion and a free central space around the central axis.

Abstract: A humeral prosthesis includes a stem component and a head component joined by an inclination component or block. The stem component and the inclination component are provided with openings/holes/fenestrations/eyelets that allow attachment of soft tissue (and optional fracture repair). A first plurality of suture holes are provided to the lateral stem body and a second plurality of suture holes are provided on the medial aspect of the inclination block. These suture holes are intended for subscapularis or lesser tuberosity reattachments. Inclination angle, radial offset, and version are adjustable and are separately and independently set and fixed.

Abstract: The present disclosure relates to a stemless shoulder prosthesis comprising a fixation device for fixing the prosthesis to a resected humerus bone, the fixation device comprising a base portion and anchoring means, the base portion having a distal side adapted to contact a resection plane of the bone and a proximal side for carrying a humeral head. The anchoring means are connected to the distal side of the base portion and adapted to fix the prosthesis to the bone. The anchoring means define a central axis perpendicular to the distal side of the base portion and a free central space around the central axis.

Abstract: Arthroplasty components include an articular surface and a bone-facing surface. The bone-facing surface includes a concave arrangement of planar surfaces which converge as they approach a middle portion of the articular surface. Instruments and implantation methods are also disclosed.

Abstract: A variable angle locking system comprising a humeral component having an underside at least partially defined by a cavity; a humeral stem couplable to the humeral component; a first washer defining a first through-hole and including a threaded portion; an adaptor defining a second through-hole and having a shelf portion and an elongated second washer, the shelf portion being adapted to be received by the cavity of the humeral component; a spring washer positioned between the first washer and the elongated second washer and defining a third through-hole; and a screw configured to lock the humeral component to the humeral stem at more than one angle relative to a common axis defined by the first, second and third through-holes, the screw including a head portion having helical threads and an elongated shaft portion extending from the head portion.

Abstract: A prosthesis (20) for use in performing joint arthroplasty is provided. The prosthesis (20) is to be fitted to a long bone (3). The prosthesis includes a first body (22) having a first body articulating surface (24) defining a generally circular outer periphery (26) of the first body articulating surface (24). The first body (22) has a support surface (28) opposed to the articulating surface (24). The support surface (28) is adapted to receive the head of the long bone (3). The prosthesis (20) also includes a second body (30) operably associated with the first body (22). The second body (30) has a second body articulating surface (32) extending from a portion of the circular outer periphery (26) of the first body articulating surface (24). A tool kit for preparing a humerus to receive a prosthesis is also disclosed.

Abstract: A modular reverse shoulder prosthesis according to embodiments of the present invention includes a stem having a proximal taper and a primary stem axis, the proximal taper extending from the stem about a metaphyseal axis, the metaphyseal axis at an angle with respect to the primary stem axis, a metaphysis having a proximal end, a distal end, a first aperture in the distal end configured to be placed over the proximal taper, and a second aperture in the proximal end having an insert axis that is eccentrically offset from the metaphyseal axis, the metaphysis configured for attachment to the stem at any rotational position of the metaphysis about the metaphyseal axis, and a reverse insert, the reverse insert having a proximal end and a distal end, wherein the proximal end comprises a concave cup formed about a cup axis and configured to receive a glenosphere, and wherein the distal end comprises a locking protrusion, wherein the locking protrusion has an outer surface with a cross-sectional shape that is rotatio

Abstract: A humeral head resurfacing implant (11) that has a modulus of elasticity close to that of human cortical bone as a result of its design from an integral substrate of isotropic graphite covered completely with a reinforcing layer of dense isotropic pyrolytic carbon. A carefully engineered cruciform stem (15) extends from the axial center of a flat distal circular surface (23) of a spherical cap portion (19) of the implant head located within the confines of a surrounding skirt portion (21).

Abstract: The present teachings are directed to a shoulder prosthesis having an adjustable radial offset and/or angular inclination provided by relative rotation of an adapter interdisposed between a stem and a head. In one example, a prosthesis has a stem having a first longitudinal axis. The prosthesis can also include an adaptor including a first taper. The first taper can have a first taper axis. The prosthesis can include a head supported by the adaptor. The head can be selectively oriented and then coupled to the first taper and the combination can be selectively orientated and the coupled to the stem.

Abstract: A variable angle locking system comprising a humeral component having an underside at least partially defined by a cavity; a humeral stem couplable to the humeral component; a first washer defining a first through-hole and including a threaded portion; an adaptor defining a second through-hole and having a shelf portion and an elongated second washer, the shelf portion being adapted to be received by the cavity of the humeral component; a spring washer positioned between the first washer and the elongated second washer and defining a third through-hole; and a screw configured to lock the humeral component to the humeral stem at more than one angle relative to a common axis defined by the first, second and third through-holes, the screw including a head portion having helical threads and an elongated shaft portion extending from the head portion.

Abstract: A humeral head augment device in use in a modular shoulder prosthesis. The humeral head augment device has an external bearing surface with at least one surface portion that includes a radius of curvature. The radius of curvature is configured to constrain transitional movement of the implanted shoulder prosthesis when the humeral head augment device is positioned within the shoulder prosthesis. The humeral head augment device also includes a coupling mechanism designed to lock the humeral head augment device to either the stem or the humeral head, thereby ensuring proper operational positioning of the device within the shoulder prosthesis and allowing the implanted shoulder prosthesis to function in a patient suffering from rotator cuff arthropathy. A shoulder prosthesis using a humeral head augment device, a method tor assembling a shoulder prosthesis and method for using a humeral head augment device in a shoulder prosthesis are also disclosed.

Abstract: A stemless humeral component for replacing the humeral head of a patient's humerus includes a support flange having a number of cantilevered legs extending distally away from a bottom surface thereof. Instruments and methods for surgically installing the stemless humeral component are also disclosed.

Abstract: A humeral component of a shoulder prosthesis encloses a stem module which has a shank and an upper shank portion with a stem support surface. A joint adapter is adapted to hold either a liner or a spherical cap. The joint adapter has an adapter support surface which interfaces with the stem support surface. Further, the stem support surface and the adapter support surface have corresponding radial arc shaped sections which allow positioning of the joint adapter against the stem module at different inclination angles. For fastening the joint adapter to the stem module, a bolt or screw is provided.

Abstract: A two piece humeral component for use in joint arthroplasty which is adapted to be implanted into a joint and engaged by a socket component of the joint. The joint component includes a body having a first articulating surface and a second medial surface opposite the first articulating surface. The first articulating surface is adapted to be engaged by the socket and the second medial surface is adapted to be secured to mounting portion. The mounting portion has a first surface and a second medial surface. The first surface is adapted to be fixably engaged to the second mounting portion of the humeral component. The second medial surface is adapted to be secured to the humerus. A peg which has a first end adapted to engage a cavity found in the humerus is disposed on the mounting portion's second medial surface.

Abstract: The present disclosure is directed to a modular shoulder prosthesis measuring device having an adjustable radial offset provided by relative rotation of an adapter interdisposed between the stem and the head. Specifically, the interface configuration between the stem and the adapter, as well as between the adapter and the head are designed such that relative positioning of these components provides a continuous adjustment in the radial offset. Indicia are provided to precisely determine the magnitude and direction of the adjustment being made.

Abstract: A method and apparatus for coupling soft tissue to a prosthetic is disclosed. Soft tissue attachment pads having porous metal attachment regions and suture accepting holes are selectively positioned onto an implantable prosthetic to provide coupling locations.

Abstract: A system and method facilitating replacement of comminuted bone fractures or portions thereof adjacent bone joints. The system and method employs a prosthesis to replace at least a portion of the comminuted bone fractures. The prosthesis serves in reproducing the articular surface of the portion or portions of the comminuted bone fractures that are replaced. In doing so, the prosthesis serves in restoring joint viability and corresponding articulation thereof.

Abstract: An implant (20), prosthesis and method of use are described. The implant comprises an articulation component (24) having a bearing surface (60) and a reverse surface (62) arranged to couple to a proximal neck portion (26) of an arthroplasty implant (22) coupled to a bone. A collar (28) is arranged to couple to the reverse surface of the articulation component. The collar defines a neck hole (70) arranged to pass around the coupling between the articulation component and the proximal neck portion of the arthroplasty implant. The collar and the articulation component comprise complementary coupling features to secure the collar to the articulation component. The collar further comprises a plurality of attachment portions (74) to couple the collar to bone fragments or soft tissues. The prosthesis comprises the implant and an arthroplasty implant having a distal portion arranged to be coupled to an end of a long bone and a proximal neck portion.

Abstract: The present teachings are directed to a shoulder prosthesis having an adjustable radial offset and/or angular inclination provided by relative rotation of an adapter interdisposed between a stem and a head. In one example, a prosthesis has a stem having a first longitudinal axis. The prosthesis can also include an adaptor including a first taper. The first taper can have a first taper axis. The prosthesis can include a head supported by the adaptor. The head can be selectively oriented and then coupled to the first taper and the combination can be selectively orientated and the coupled to the stem.

Abstract: The present disclosure relates to a stemless shoulder prosthesis comprising a fixation device for fixing the prosthesis to a resected humerus bone, the fixation device comprising a base portion (11, 31, 32) and anchoring means (12, 12?), the base portion (11, 31, 32) having a distal side adapted to contact a resection plane of the bone and a proximal side for carrying a humeral head. The anchoring means (12, 12?) are connected to the distal side of the base portion (11, 31, 32) and adapted to fix the prosthesis to the bone. The anchoring means (12, 12?) define a central axis (C), wherein the anchoring means (12, 12?) comprise a plurality of protrusions (13, 13?, 13a, 13b, 13c) projecting from the base portion (11, 31, 32), each protrusion (13, 13?, 13a, 13b, 13c) extending between an inner end (I) and an outer end (O). The protrusions (13, 13?, 13a, 13b, 13c) define a free central space (F) around the central axis (C).

Abstract: A variable angle locking system comprising a humeral component having an underside at least partially defined by a cavity; a humeral stem couplable to the humeral component; a first washer defining a first through-hole and including a threaded portion; an adaptor defining a second through-hole and having a shelf portion and an elongated second washer, the shelf portion being adapted to be received by the cavity of the humeral component; a spring washer positioned between the first washer and the elongated second washer and defining a third through-hole; and a screw configured to lock the humeral component to the humeral stem at more than one angle relative to a common axis defined by the first, second and third through-holes, the screw including a head portion having helical threads and an elongated shaft portion extending from the head portion.

Abstract: A humeral head augment device for use in a modular shoulder prosthesis. The humeral head augment device has an external bearing surface with at least one surface portion that includes a radius of curvature. The radius of curvature is configured to constrain translational movement of the implanted shoulder prosthesis when the humeral head augment device is positioned within the shoulder prosthesis. The humeral head augment device also includes a coupling mechanism designed to lock the humeral head augment device to either the stem or the humeral head, thereby ensuring proper operational positioning of the device within the shoulder prosthesis and allowing the implanted shoulder prosthesis to function in a patient suffering from rotator cuff arthropathy. A shoulder prosthesis using a humeral head augment device, a method for assembling a shoulder prosthesis and method for using a humeral head augment device in a shoulder prosthesis are also disclosed.

Abstract: A prosthesis for a joint includes a stem for engagement with a bone. The stem includes a surface defining a bore. The prosthesis further includes a joint component. The joint component includes a bearing surface for articulating engagement with at least one of a natural opposing joint component and a prosthetic opposing joint component. The prosthesis further includes a mounting element. The mounting element includes a proximal portion for engagement with the joint component and further includes a substantially solid articulating portion having a contiguous periphery. The substantially solid articulating portion is configured to facilitate articulating movement of the substantially solid articulating portion within the bore when the contiguous periphery is not forcefully engaged with the bore, and the substantially solid articulating portion and the bore are configured to fixedly couple the mounting element to the stem when the contiguous periphery is forcefully engaged with the bore.

Abstract: A humeral component of a shoulder prosthesis encloses a stem module which has a shank and an upper shank portion with a stem support surface. A joint adapter is adapted to hold either a liner or a spherical cap. The joint adapter has an adapter support surface which interfaces with the stem support surface. Further, the stem support surface and the adapter support surface have corresponding radial arc shaped sections which allow positioning of the joint adapter against the stem module at different inclination angles. For fastening the joint adapter to the stem module, a bolt or screw is provided.

Abstract: A method of forming a shoulder prosthesis includes resecting an end portion of a humerus to form a resected end of the humerus and a resected portion separated from the humerus, the resected portion having an outer convex surface and an inner surface. The inner surface of the resected portion is processed to include a concave articular surface. The outer convex surface of the resected portion is implanted in the resected end of the humerus. An implant having a convex articular surface is secured to a glenoid. The concave articular surface of the resected portion is articulated with the convex articular surface of the implant.

Abstract: A system for packaging a medical implant may include a sleeve for housing the implant within a cavity in the sleeve, with at least a portion of the cavity conforming to the shape of the implant. A flexible material film may cover and substantially conform to the shape of the sleeve so as to aid in stabilizing the sleeve and implant within an outer package. An insertion instrument for inserting the implant within the body of a patient may also be provided with the system. In some embodiments, the sleeve, with the implant inserted in the cavity of the sleeve, is configured for manipulation by a user without contacting the implant, and the implant is connectable to the insertion instrument while in the sleeve.

Abstract: The present disclosure is directed to a modular shoulder prosthesis measuring device having an adjustable radial offset provided by relative rotation of an adapter interdisposed between the stem and the head. Specifically, the interface configuration between the stem and the adapter, as well as between the adapter and the head are designed such that relative positioning of these components provides a continuous adjustment in the radial offset. Indicia are provided to precisely determine the magnitude and direction of the adjustment being made.

Abstract: A prosthesis system includes at least one stem including a cavity, a plurality of heads having a head coupling portion, at least one first coupler including a first upper coupling portion and a first lower coupling portion, the first upper coupling portion configured to couple with the head coupling portion of each of the plurality of heads and the first lower coupling portion configured to couple with the stem with a predetermined version angle and a predetermined inclination angle, and at least one second coupler including a second upper coupling portion and a second lower coupling portion, the second upper coupling portion configured to couple with the head coupling portion of each of the plurality of heads and the second lower coupling portion configured to couple with the stem with any of a plurality of version angles and any of a plurality of inclination angles.

Abstract: Disclosed herein is a kit that includes a humeral stem having a central longitudinal axis, the humeral stem configured to attach to a resected bone; a first tuberosity component having a first thickness relative to the central longitudinal axis of the humeral stem; a second tuberosity component having a second thickness relative to the central longitudinal axis of the humeral stem, wherein the first thickness of the first tuberosity component is different than the second thickness of the second tuberosity component; and at least one proximal segment configured to engage at least one of the first tuberosity component and the second tuberosity component. In an embodiment, the first thickness of the first tuberosity component is at least 20 mm relative to the central axis of the humeral stem, and the second thickness of the second tuberosity component is at least 20 mm relative to the central axis of the humeral stem.

Abstract: A prosthesis is provided and may include a central body having a longitudinal axis and an opening that receives an installation tool. The prosthesis may additionally include a plurality of arms each including a solid body attached to the central body and a porous coating covering the solid body. The porous coating may provide each of the plurality of arms with an outer shape having a different shape than the solid body.