Abstract: An orthopaedic bearing includes a metallic component having a polymer composite secured thereto. A method of making an orthopaedic bearing is also disclosed.

Abstract: A augmented glenoid implant assembly for use in performing shoulder arthroplasty is provided. The augmented glenoid implant assembly is used for cooperation with the glenoid fossa of a scapula. The implant assembly includes a first component for attachment to the scapula. The first component defines a support surface for cooperation with the glenoid fossa, a second surface positioned adjacent a buttress formed in the glenoid fossa and an assembly surface. The implant assembly also includes a second component removably secured to the first component. The second component includes an assembly face of the second component. The assembly surface of the second component is in close approximation to the assembly surface of the first component. The second component further includes an articulating surface opposed to the assembly surface.

Abstract: The invention relates to a process for the production of an ultra-high molecular weight polyethylene ((U)HMWPE) article comprising: —copolymerizing ethylene with a linear, branched or cyclic polyene having 3 to 100 carbon atoms, resulting in a copolymer of ethylene and polyene ((U)HMWPE-P), using such a content of polyene that the number of polyene branches in (U)HMWPE-P is 0.01 to 15 on the average per 1000 carbon atoms; —cross-link the (U)HMWPE-P during or after molding the (U)HMWPE-P.

Abstract: Methods and devices are disclosed relating improved articular models, implant components, and related guide tools and procedures. In addition, methods and devices are disclosed relating articular models, implant components, and/or related guide tools and procedures that include one or more features derived from patient-data, for example, images of the patient's joint. The data can be used to create a model for analyzing a patient's joint and to devise and evaluate a course of corrective action. The data also can be used to create patient-adapted implant components and related tools and procedures.

Abstract: An orthopaedic alignment guide component is provided for preparing a patient's bone socket, such as the glenoid of the patient's scapula, to receive a prosthetic glenoid component. The orthopaedic alignment guide component includes a guide body for inserting a guide pin into the patient's scapula and an inferior referencing arm for referencing an inferior surface of the patient's scapula.

Abstract: An arthroscopic method of glenoid resurfacing with a meniscal allograft. The glenohumeral joint is debrided and holes are formed around the anterior and posterior perimeter of the glenoid rim. A meniscal allograft is prepared by removing it from its bone block and then bringing together its two horns to form a ring. Subsequent to the formation of the graft ring, a series of loops are installed along the edge of the graft. The loops correspond to the holes on the glenoid surface. Once the graft has been successfully placed on the glenoid, the loops are positioned in close proximity to the pre-drilled holes. Fixation devices such as anchors may be installed over the loops, to attach the perimeter of the graft to the glenoid through the pre-drilled holes.

Abstract: A medical device having body contacting surfaces provided with a film of amorphous calcium phosphate having a thickness of 1 nm to 10000 nm and an average dissolution rate calculated as the time taken to remove 95% of the film of at least 1 nm h?1 as determined in accordance with ASTM Standard P1926-03. The characteristics of the film are such that the film is relatively rapidly dissolved from the surface by body fluids. This dissolution of the surface film of amorphous calcium phosphate is sufficiently fast to prevent the attachment of bacteria, thus preventing them forming a biofilm and keeping the cells in a planktonic (non-biofilm) state where they are more vulnerable to the body's defences. The invention is particularly applicable to implants (e.g. orthopaedic implants such as prosthetic hips) but may also be applied to “non-implanted” devices such as surgical instruments.

Abstract: The present invention relates to methods for making oxidation resistant medical devices that comprise polymeric materials, for example, ultra-high molecular weight polyethylene (UHMWPE). The invention also provides methods of making antioxidant-doped medical implants, for example, doping of medical devices containing cross-linked UHMWPE with vitamin E by diffusion and materials used therein.

Abstract: An elongate, longitudinally oriented outer sleeve includes an outer sleeve surface and has a sleeve body. A stem-receiving cavity extends from a distal sleeve end into the sleeve body. The distal sleeve end includes a sleeve interference protrusion extending from the distal sleeve end away from the sleeve body. A joint articulating member includes an elongate, longitudinally oriented stem. The joint articulating member includes a joint articulating surface spaced apart from a distal stem end by an angularly extending connector neck. When the stem is inserted into the stem-receiving cavity, the stem and the outer sleeve are configured for selective relative rotation about a shared longitudinal axis, and the connector neck impinges upon the sleeve interference protrusion responsive to a predetermined amount of relative rotation between the stem and the outer sleeve to prevent relative rotation between the stem and the outer sleeve outside a predetermined range of allowable rotation.

Abstract: A prosthetic glenoid component for replicating the behavior of a patient's natural glenoid includes a rim that replicates the patient's natural glenoid labrum.

Abstract: A glenoid prosthetic component includes a bearing body for a prosthetic or bony humeral head. The bearing body includes a main portion for articulation with the humeral head and a peripheral portion extending about the main portion. A connection portion resides between the main portion and the peripheral portion and is mechanically weakened in order, in service, to elastically deform relative to the rest of the bearing body under the action of the humeral head.

Abstract: An implant system for total shoulder arthroplasties, hemi shoulder arthroplasties, and “reverse” total shoulder arthroplasties including a humeral stem having an enlarged head portion with interfaces adapted to removably receive various modular interchangeable components, such as articulating liners, spacers, and adapter inserts. The humeral stem functions as a universal platform that may be used in either conventional or “reverse” total shoulder arthroplasties, as well as hemi shoulder arthroplasties, and may remain implanted in place during a revision in which the implant system is converted between the foregoing configurations, for example.

Abstract: The present disclosure relates to prosthetic implants, components of prosthetic implants, and methods of fixating the components to one another and, especially fixation of the implants to bone.

Abstract: The invention relates to a glenoid (shoulder socket) implant prosthesis, a humeral implant prosthesis, devices for implanting glenoid and humeral implant prostheses, and less invasive methods of their use for the treatment of an injured or damaged shoulder.

Abstract: An implantation method includes creating a first bore and a second bore in a glenoid region of a scapula so that a first opening defined by the first bore and a second opening defined by the second bore are offset by a first distance. The method further includes providing a glenoid component that includes (i) a base component having a bearing surface defined on a humeral-facing side thereof, (ii) a first peg extending from a scapula-facing side of the base component, and (iii) a second peg extending from the scapula-facing side of the base component, the first peg and the second peg being positioned in non-parallel orientation with respect to each other. The method also includes flexing at least one of the first peg and the second peg so that a first end portion of the first peg and a second end portion of the second peg are offset by a second distance which corresponds to the first distance.

Abstract: A prosthesis that mechanically couples with both cancellous bone and cortical bone of a glenoid includes a head portion comprising a rear surface and an articular surface, an anchor member, and a plurality of deformable fins extending radially outward from the anchor member. The anchor member includes a distal end and a proximal end connected to the rear surface of the head portion. The plurality of deformable fins extend radially outward from the anchor member and includes at least a first proximal fin adjacent to the rear surface of the head portion positioned to engage with the cortical bone. The anchor member may also include at least one distal fin located proximate the distal end of the anchor member positioned to engage with the cancellous bone.

Abstract: A modular humeral head system includes a housing having an outer surface and an inner surface. A hemispherical socket formed on one end of the inner surface and threads formed on the other end of the inner surface. A cap is attached at the threaded end of the housing. The cap has one or more threaded holes that run from the top surface to bottom surface of the cap. A screw may be inserted in each hole. The modular humeral head system also includes an intermediate piece having a hemispherical head at one end of a tapered shaft. The tapered shaft is inserted in a humeral stem. The hemispherical head and the hemispherical socket form a ball and socket coupling. A trial head may be impacted on the housing. The trial head has one or more holes that are aligned with the screws inserted in the cap.

Abstract: A modular humeral head system includes a housing having an outer surface and an inner surface. A hemispherical socket formed on one end of the inner surface and threads formed on the other end of the inner surface. A cap is attached at the threaded end of the housing. The cap has one or more threaded holes that run from the top surface to bottom surface of the cap. A screw may be inserted in each hole. The modular humeral head system also includes an intermediate piece having a hemispherical head at one end of a tapered shaft. The tapered shaft is inserted in a humeral stem. The hemispherical head and the hemispherical socket form a ball and socket coupling. A trial head may be impacted on the housing. The trial head has one or more holes that are aligned with the screws inserted in the cap.

Abstract: Various embodiments of the present invention provide systems and methods for treating a proximal humeral fracture. A system according to one embodiment includes a longitudinal member configured to be received within the humeral shaft. The system includes a jig assembly configured to be coupled to the longitudinal member, wherein the jig assembly includes at least one hole defined therethrough that is configured to guide placement of at least one hole in the humeral shaft, and wherein the hole formed in the humeral shaft is configured to align with at least one hole in the humeral implant such that the jig assembly is configured to locate the position of the humeral implant in the humeral shaft.

Abstract: Embodiments of the present invention provide systems and methods for use in a replacing a joint having a prepared bone surface. A base plate system according to one embodiment includes a base plate comprising a plurality of locking screw holes defined therethrough and first and second opposing surfaces, wherein the second surface is configured to be positioned adjacent to the prepared bone surface. The system also includes a central peg extending outwardly from the second surface of the base plate and configured to engage the prepared bone surface and a plurality of locking screws configured to be inserted within a respective locking screw hole and engage the prepared bone surface. In addition, the system includes a plurality of locking washers disposed within a respective locking screw hole and configured to receive a respective locking screw and lock the locking screw at a desired angle with respect to the base plate.

Abstract: The invention provides a multi-polymer hydrogel article having a first polymeric, water-swellable material and a second polymeric material, organized such that a first region substantially comprises the first polymeric, water-swellable material, a second region adjacent the first region comprises a mixture of the first polymeric, water-swellable material and the second polymeric material, and a third region adjacent the second region substantially comprises the second polymeric material. The article exhibits an increasing concentration gradient of the second polymeric material moving from the first region, through the second region, to the third region.

Abstract: A modular joint prosthesis is intended for implantation in a patient. According to an exemplary embodiment, the modular joint prosthesis includes a head and a stem coupled to the head. The stem has a proximal portion coupled to the head and a distal portion configured to extend into a long bone of the patient. The distal portion may be removed from the stem after implantation of the prosthesis without also removing the proximal portion.

Abstract: A humeral prosthesis includes a stem component and a humeral head component. The humeral head component has a configuration that is similar to the curvature of the humeral head to allow the head to reconstruct the anatomy of the damaged humerus. The stem component is threaded and cannulated and engages the humeral head component. The stem component is configured to be inserted within the humeral diaphyseal channel. When engaged the humeral head component and the stem component form an articulated joint allowing the humeral head component to articulate with respect to the stem component.

Abstract: A glenoid component used for shoulder arthroplasty is adapted to be implanted into a scapula and engaged by a head of a humeral component. The glenoid component includes a body having a first articulating surface and a second medial surface opposite to the first articulating surface. The first articulating surface is adapted to engage with a humeral head. A plurality of fixed pegs each have a first end adapted to engage a cavity formed in the scapula and a second end extending from the medial surface. A central peg fixation mechanism is provided that is configured to couple an optional central fixation peg to the medial surface.

Abstract: A shoulder prosthesis includes a vault-filling component defining a bearing-facing surface and having a first coupling component, the vault-filling component including (i) a vault-filling first portion defining a first part of the bearing-facing surface, and (ii) a projecting second portion projecting from the vault-filling first portion so as to define a second part of the bearing-facing surface. The vault-filling first portion and the projecting second portion define a bone space therebetween. The shoulder prosthesis further includes a bearing component defining a bearing surface and having a second coupling component configured to cooperate with the first coupling component to couple the bearing component to the vault-filling component. At least one bone attachment member positioned in the bone space. The projecting second portion of the vault-filling component further defines a scapula-facing surface.

Abstract: A shoulder prosthesis includes a metaglene component that has (i) a base with a bearing-facing side, a scapula-facing side, and an external coupling surface interposed therebetween, (ii) an augment attached to the scapula-facing side of the base, and (iii) a post attached to at least one of the base and the augment. The metaglene component has defined therein a passage extending through at least both the base and the post. The metaglene component further having a plurality of fastener holes defined in the base. The shoulder prosthesis further includes a bearing component defining a cavity and including a bearing surface, the cavity defining an internal coupling surface, and the bearing-facing side of the metaglene component being located within the cavity so that the external coupling surface of the base is positioned in contact with the internal coupling surface of the bearing component to form a friction fit connection between the bearing component and the metaglene component.

Abstract: A scapula component (1) for a reverse shoulder prosthesis comprises a part spherical, convex, surface (3) which is less than a hemisphere. The part spherical surface does not have a rotational axis of symmetry, and may include a main circular surface portion and one or more subsidiary surface portions (5, 6, 7) depending from an edge of the main surface portion. A humerus component (200) for a reverse shoulder prosthesis comprises a cup member (202) having a part spherical, concave bearing surface (206) surrounded by an oval rim (208).

Abstract: The invention features a glenoid (shoulder socket) implant prosthesis, a humeral implant prosthesis, devices for implanting glenoid and humeral implant prostheses, and less invasive methods of their use for the treatment of an injured or damaged shoulder.

Abstract: The invention features a glenoid (shoulder socket) implant prosthesis, a humeral implant prosthesis, devices for implanting glenoid and humeral implant prostheses, and methods of their use for the treatment of an injured or damaged shoulder.

Abstract: Various embodiments of the present invention relate to an apparatus and method for reverse shoulder arthroplasty (e.g., reverse total shoulder arthroplasty). In one specific example, a glenoid component used to resurface the scapula may be provided. Of note, unlike traditional total shoulder arthroplasty the glenoid component in a reverse shoulder is convex rather than concave; it acts as a physical stop to prevent the superior migration of the humeral head—a typical occurrence in patients suffering from rotator cuff tear arthropathy (CTA).

Abstract: A set includes at least one humeral element (2), at least one prosthetic head, and elements for mounting the prosthetic head in a plurality of positions in relation to the humeral element. The mounting elements include a plane and circular proximal face (12) of the humeral element, and a plate (13) projecting from the face and including indexing members, an inclined peripheral edge (15) and a groove (14). The set of elements includes at least one intermediary element including a base and a mounting end on one side of the base, the base having a cavity containing indexing members which complement those of the plate, and the cavity being dimensioned in such a way as to receive the plate in an adjusted manner. The base (21, 31) also includes a groove in the wall defining the periphery of the cavity, the groove receiving a split ring.

Abstract: A glenoid component for use with a prosthetic humeral component for use in performing shoulder arthroplasty is provided. The glenoid component may be fitted at least partially into a cavity formed in the glenoid vault. The glenoid component includes a body having a stem portion for inserting at least partially into the cavity formed in the glenoid vault. The stem portion cooperates with the interior wall of the cavity formed in the glenoid vault. The body has a bearing portion for articulating cooperation with the prosthetic humeral component.

Abstract: A resurfacing implant comprising a head and an extended articulating surface protruding from a portion of the head operable to articulate with at least one of a bone and a ligament. The head has an exterior articulating surface, an interior surface opposite the exterior articulating surface, and an anchoring device extending from the interior surface.

Abstract: A glenoid component apparatus for shoulder arthroplasty includes a bearing portion and a stem portion connected to the bearing portion. The stem portion is modeled from a normalized glenoid vault morphology. A method for making a glenoid component for shoulder arthroplasty includes obtaining a model of a normalized glenoid vault morphology and producing a stem portion of the glenoid component based on the model.

Abstract: A shoulder joint prosthesis has an at least two-pieced humeral head prosthesis, comprising a calotte, or a joint head (3) and a fixing body (5, 7). The latter comprises a fixing piece (15), for detachable connection of the calotte and a mounting section (21), for the at least cement-free anchoring of the fixing device in the bone. The fixing body is preferably of two-piece embodiment, comprising a discoid positioning body (5) with a medial hole and an anchoring body (7), provided for fixing the positioning body (5) to the bone through the medial hole (19).

Abstract: A material comprising: from 98-50% by volume of zirconia as a matrix, which is stabilized with i) either of from about 2 to about 3 mole percent of yttria ii) or of from about 10 to about 15 mole percent of ceria; iii) or a mixture of ceria and yttria in the range of amounts as given in i) and ii) the stabilizing oxides may be substituted against each other in a ratio from 1:99 to 99:1 and a maximum stabilization of 3 mole percent related to pure yttria and 15 mole percent related to pure ceria respectively are not exceeded, and wherein the term mole percent is related to the zirconia matrix and wherein the zirconia matrix is obtainable from a) a powder of particles of zirconia having a mean particle size of <0.

Abstract: A method for implanting an intra-articular shoulder prosthesis is provided. The method includes removing a proximal portion of a humerus. The proximal portion of the humerus preferably forms a resected portion. The resected portion has a convex outer surface and an inner surface. The method further includes engaging the convex outer surface of the resected portion with a cut surface of the proximal portion of the humerus. The cut surface of the proximal portion of the humerus and/or the inner surface of the resected portion are optionally processed to form a generally concave surface, such as by impacting. In one embodiment, the inner surface of the resected portion is impacted into engagement with the cut surface of the proximal portion of the humerus. The generally concave inner surface of the resected portion forms a concave articular surface to receive an interpositional implant.

Abstract: This shoulder prosthesis, comprising a glenoid element (6) intended to be attached to the scapula. According to the invention, this glenoid element (6) comprises a distal anchoring tail (20) and a proximal flange (21), the distal anchoring tail (20) having a substantially “I-shaped” cross-section, i.e. with a central core and two side walls substantially perpendicular to this central core, and with a helicoidally twisted shape, and the proximal flange (21) being perforated with at least one hole (30); and the prosthesis comprises at least one screw (5) intended to be engaged into the hole (30) of said flange (21) and inserted into the bone.

Abstract: A joint prosthesis, as a replacement for a ball and socket type joint, has a head that allows for infinite dialability and/or angular orientation with respect to an implanted stem, particularly during a procedure for implanting the prosthesis. The angular orientation is positionable and fixed or locked in a set position without utilizing external or separate fasteners. An expandable conjoining member associated with the prosthesis stem receives the head and allows for the positioning thereof. The expandable conjoining member is fixed in position through expansion of the expandable conjoining member to produce a friction fit (wedging) of the expandable conjoining member within a receiving socket of the stem. Expansion of the expandable conjoining member is achieved through coupling interaction of a stem of the head with the conjoining member.

Abstract: A shoulder prosthesis assembly includes a metaglenoid element (7) having a plate (13) with a central tubular bushing (14) and members for anchoring it in the glenoid cavity. The assembly also includes a glenoid sphere (9) that fits over the metaglenoid element which has an axial screw that is (35) screwed into the bushing. The glenoid sphere has a member to facilitate installation thereof on the metaglenoid element. The member may include a pin (46) adapted to slide in the tubular bushing (14) and in an axial channel of the screw, so that the glenoid sphere (9) can be screwed into place without any risk of damaging the thread of the screw or the tapping of the bushing.

Abstract: A convex bearing head having a fixation hole is provided. The bearing head is eccentric about an axis defined by the fixation hole and configured to be secured to a mounting plate attached to a bone surface. The unsecured bearing head is rotatable upon the mounting plate about the fixation hole. The bearing head has an orientation formation indicating a radial direction of maximum eccentricity, the orientation formation being engageable by an orientation guide such that the bearing head can be rotated upon the mounting plate to a predetermined orientation.

Abstract: Attachment element for a prosthesis of the shoulder for the articulation of a humerus in a scapula of a shoulder having a glenoid cavity. The prosthesis comprises a first articulation element associated with the top of the humerus, and a second articulation element associated with the glenoid cavity. The attachment element comprises a first part for removable anchorage to the first or second articulation element, and a second part for attachment of the prosthesis to the bone part of the scapula in a position outside the bulk of the first and second articulation element.

Abstract: Various embodiments of the present invention are directed to a shoulder prosthesis. These embodiments may relate to a shoulder prosthesis including, for example, a humeral stem for fracture indication. Of note, certain embodiments of the present invention provide a humeral prosthesis with improved integration of the tuberosities around the humeral stem. Various methods relating to uses and applications of the prosthesis are also disclosed.

Abstract: A glenoid component apparatus for shoulder arthroplasty includes a bearing portion and a stem portion connected to the bearing portion. The stem portion is modeled from a normalized glenoid vault morphology. A method for making a glenoid component for shoulder arthroplasty includes obtaining a model of a normalized glenoid vault morphology and producing a stem portion of the glenoid component based on the model.

Abstract: A resurfacing implant comprising a head and an extended articulating surface protruding from a portion of the head operable to articulate with at least one of a bone and a ligament. The head has an exterior articulating surface, an interior surface opposite the exterior articulating surface, and an anchoring device extending from the interior surface.

Abstract: An implant assembly and associated method for selectively performing reverse and traditional arthroplasty for a shoulder joint that includes a humerus and a glenoid. The implant assembly may include a head, a cup, a humeral stem and an adaptor. The method includes inserting the humeral stem to the humerus and connecting a male taper of the adaptor to a female taper of the head. For reverse arthroplasty, the method includes attaching the adaptor to the glenoid and the cup to the stem. For traditional arthroplasty, the method includes attaching the adaptor to the humeral stem and the cup to the glenoid. The method also includes articulating the head with the cup.

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).

Abstract: A shoulder prosthesis comprising a socket and a condyle that cooperates with the socket. The condyle also cooperates with a base plate facing the scapula similar to a clamping connection. The condyle is plugged onto the base plate by means of a receptacle that is embodied on the condyle. The base plate can be anchored to the glenoid fossa of the scapula with the aid of two peg-type protrusions.

Abstract: A shoulder prosthesis comprising a socket and a condyle that cooperates with the socket. The condyle also cooperates with a base plate facing the scapula similar to a clamping connection, the condyle being plugged onto the base plate by means of a receptacle that is embodied on the condyle and is concentric to the center line thereof. the base plate can be anchored to the glenoid fossa of the scapula with the aid of a protrusion located on the base plate as well as anchoring elements which can be accommodated within sleeves provided on the base plate. According to the invention, the base plate has a dome-shaped bottom surface that is to rest against the glenoid fossa of the scapula, the center of the dome shape being eccentric to the center line of the base plate.

Abstract: A prosthetic assembly and a method of assembling same. The prosthetic assembly includes a base component with at least one engagement surface. A pyrolytic carbon component includes at least one engagement surface. The pyrolytic carbon component is elastically deformed to mechanically interlock with the engagement surface on the base component. The pyrolytic carbon component retains at least a portion of the deformation stress created during coupling with the base component.