A joint prosthesis comprises a first component and a second component being connected via a ball-and-socket-joint, wherein the first component comprises two outward spherical sections, at least one of the spherical sections having a projection; the ball-and-socket-joint comprises two gliding blocks each having an inward spherical section and at least one of the gliding blocks comprising a hole, the gliding blocks being attached to the second component, the outward spherical sections are in gliding engagement with the inward spherical sections of the gliding blocks so that the first component is movably attached to the second component; and the projection is inserted into one of the holes of the gliding blocks, so as to limit the mobility of the ball-and-socket-joint.

A humeral implant component connectable to another humeral implant component, the humeral implant component comprising: a longitudinal axis, a first end and a second end, the first end and the second end opposing each other along the longitudinal axis of the humeral implant component, and an interface part for connecting the humeral implant component to the other humeral implant component, wherein the interface part is tapered along the longitudinal axis in a direction from the second end to the first end, the interface part being engageable with a tapered interface part of the other humeral implant component to form a tapered connection between the humeral implant component and the other humeral implant component, wherein the humeral implant component further comprises a through hole extending along the longitudinal axis for locking the tapered connection by a longitudinal fastener.

Shoulder arthroplasty systems and configurations for components thereof are described. For example, implant systems for a total should arthroplasty (TSA), hemi shoulder arthroplasty, and reverse should arthroplasty (RSA) are described. In addition, exemplary configurations for baseplates, glenoid components, glenosphere components, humeral components, humeral head components, humerosocket components, connectors, and adaptors, are described.

Modular endoprosthesis for at least partial replacement of a tubular bone, comprising, as module components, a stem for insertion into a bone cavity of the tubular bone, and an end piece comprising a support body with a neck part arranged on the medial aspect thereof. Said module components being able to be coupled to each other and released from each other along a longitudinal axis of the shaft. The end piece has at least two different surface configurations on its support body, namely a closed surface (6′) on a medial aspect, and a porous configuration of the surface on the opposite, lateral aspect. The latter permits and positions the adhesion of muscle tissue, specifically without suturing. The muscle trauma caused by suturing, and the peak loads that occur at the respective suture points, can thus be avoided by virtue of the invention, by means of the location-specific direct adhesion of the muscle. It is thus possible to achieve quicker and reliable mobilization of the patient, and this with a reduced risk of complications.

The present invention relates to a glenoid component (100, 600, 800, 1000, 1200) for shoulder prosthesis, comprising: a glenoid coupling surface (101, 1001), adapted to be fixed to a bone and comprising a first convex portion (102) having a first outer edge (103, 1003) which defines a development plane (104, 1004); a prosthetic coupling surface (105, 1005), opposite the glenoid coupling surface (101, 1001) and adapted to house a second prosthetic component of the shoulder prosthesis, the prosthetic coupling surface (105, 1005) comprising a second portion (106) having a second outer edge (107, 1007) which defines a reference plane (108, 1008); wherein the glenoid component (100, 1000) provides a predetermined offset (109, 809, 1009) between the development plane (104, 1004) and the reference plane (108, 1008), so as to define an increased thickness of the glenoid component (100, 1000) adapted to compensate for a bone deficit. The present invention also relates to a shoulder prosthesis.

The present disclosure provides an implant component assembly for a joint replacement. The assembly comprises an implant component, the implant component including an interface part for attaching another implant component and an assembly channel. The assembly further comprises an assembly screw for securing the other implant component to the implant component, the assembly screw having a longitudinal axis, a screw head, and a screw shank and being insertable into the assembly channel. A screw retention unit of the assembly is configured for keeping the assembly screw within the assembly channel and allowing rotation of the assembly screw about the longitudinal axis.

The present disclosure is directed offset adapters, trial implant systems, shoulder implant systems, and methods for total shoulder replacement, wherein the eccentricity of a humeral head relative to a humeral anchor and resected proximal portion of a humerus is selectable by a surgeon. A humeral head implant system includes a humeral head, an adapter, and humeral anchor. An offset adapter is operable to connect the humeral head to a humeral anchor. The offset adapter includes a first tapered cylindrical portion having a first axis, a second tapered cylindrical portion having a second axis, and the first axis being eccentrically disposed relative to the second axis of the adapter. A trial humeral head system includes a trial humeral head, a pin guide, and a trial adapter.

A coupling system between the parts in a prosthesis for the articulation of the shoulder comprising a metal support (11), a pin element (12), a cylindrical bush (20) and a glenosphere or hemispherical element (22) which are consecutively coupled in the sequence listed above, in addition to reciprocal constraint elements, wherein said metal support (11) and said pin element (12) are constrained with an interposed conical coupling (13,14), said pin element (12) provides a central pass-through hole and externally, at one end opposite to that of coupling with the metal support (11), it has a cylindrical section (15) with a knurled surface, said pin element (12) provides that said pass-through hole comprises a threaded portion (17), said cylindrical bush (20) is externally provided with a threading (21) complementary to the threaded section (17) of the pin element (12), said glenosphere or hemispherical element (22) comprises an axial pass-through hole (24) which on one side has an internal seat (23) with an enlarged diameter provided with knurling complementary to the section (15) with a knurled surface of the pin element (12), said reciprocal constraint elements comprising at least one safety screw (23, 123).

Shoulder arthroplasty systems and configurations for components thereof are described. For example, implant systems for a total should arthroplasty (TSA), hemi shoulder arthroplasty, and reverse should arthroplasty (RSA) are described. In addition, exemplary configurations for baseplates, glenoid components, glenosphere components, humeral components, humeral head components, humerosocket components, connectors, and adaptors, are described.

The invention relates to a prosthesis comprising a first component (10) and a second component (60), wherein the first and second components have respective inter-engaging parts (24,64) and wherein at least one of the first or second components comprises an anti-rotational element (32,66) configured to resist rotational movement between the inter-engaging parts and wherein the inter-engaging parts share an axis of rotation such that they are engageable in a plurality of relatively rotated positions and wherein the axis of rotation of the inter-engaging part of one of the first or second components is parallel to but offset from a central axis of said first or second component.