The disclosure relates to a vertebral body implant including a flexible main body and at least one pedicle screw joint. The flexible main body is an integrally formed single piece having at least one joint-accommodating hole and at least one opening connected to the at least one joint-accommodating hole. The pedicle screw joint is an integrally formed single piece movably accommodated in the at least one joint-accommodating hole.

An intervertebral prosthesis for insertion between adjacent vertebrae includes upper and lower prosthesis plates locatable against respective vertebrae and having opposing, concavely curved recesses therein, and a core located between the plates. The core has opposed, convexly curved surfaces received in the recesses of the plates to allow the plates to slide in articulated manner over the core. The opposed surfaces of the core and the recesses of the plates have cooperating spherical curvatures. The recess of each plate surrounds a locating peg projecting centrally from the base of the recess and is bounded by an annular rim, such that the annular rims of the plates are arranged to contact one another at a predetermined limit of sliding movement of the plates over the core. The peg locates loosely in an opening located centrally in a curved surface of the core, whereby the plates can slide over the core in all directions while the peg holds the core captive.

The present invention relates to a modular knee prosthesis assembly kit for replacement of resected articular surfaces of a distal femur of a first patient side. The kit comprises at least one bi-condylar component sized and shaped to substantially replace resected posterior and distal condylar bone portions; and at least a first trochlear groove component and a second trochlear groove component, each sized and shaped to replace a resected trochlear groove bone portion. The first trochlear groove component comprises a first patella articulation path defining a first trochlear groove direction angle. The second trochlear groove component comprises a second patella articulation path defining a second trochlear groove direction angle. An assembly of the bi-condylar component and one of the first and second trochlear groove components forms a substantially complete femoral knee prosthesis. The second trochlear groove direction angle is different from the first trochlear groove direction angle.

An expansion member for distributing graft material through a cage and into an intervertebral space is provided. The expansion member has a central beam with an entry port in fluid communication with an exit port for distribution of the graft material. The central beam is inserted into a cage having a reversible collapse from an expanded state into a collapsed state, the expanded state forming a graft distribution window. The expanded state, for example, can be configured to open the graft distribution window which at least substantially closes upon the reversible collapse.

Tibial implants, instruments, systems, and methods of implanting a tibial tray during a knee arthroplasty. The inserter instrument may include a main body with a pair of fixed posterior tabs, a moveable anterior tab body with an anterior tab, and a rotatable shaft for controlling movement of the anterior tab body. When the shaft is rotated, the anterior tab body is translated into an expanded position to lock the inserter to the tibial tray, thereby providing precise positioning of the tibial tray during implantation.

A composition and medical implant made therefrom, the composition including a thick diffusion hardened zone, and preferably further including a ceramic layer. Also provided are orthopedic implants made from the composition, methods of making the composition, and methods of making orthopedic implants from the composition.

An offset coupler is provided. The offset coupler includes a body having a stem coupling component and revision coupling component. The revision coupling component is offset from the stem coupling component along a longitudinal axis. The body includes a porous material which allows bone to grow into the porous material.

A femoral component (2) for mounting onto a femur and being adapted to articulate with a tibial bearing component in a knee prosthesis comprises proximal end portions (7, 10) adapted to be oriented towards the femur when the femoral component (2) is mounted thereon, and distal end portions adapted to be oriented towards the tibial bearing component when the knee prosthesis is fully extended. The proximal end portions (7) comprise posterior proximal end portions which are located on an posterior side of the femoral component and an anterior proximal end portion (10) which is located on an anterior side of the femoral component (2). The femoral component (2) further comprises a medial condyle (13) and a lateral condyle (14) which each extend from one of the posterior proximal end portions beyond the distal portions and towards the anterior proximal end portion (10) of the femoral component (2). The medial and lateral condyles (13, 14) form a condylar gap between each other, wherein the medial condyle (13) and the lateral condyle (14) are shaped to articulate with the tibial bearing component through a range of motion, in which a full extension of the knee prosthesis corresponds to zero degrees flexion of the knee prosthesis and positive flexion corresponds to greater than zero degrees flexion of the knee prosthesis. The femoral component (2) further comprises a sagittal plane extending in a proximal/distal direction and further extending through the condylar gap from the anterior side to the posterior side of the femoral component (2). A patellar groove (16) extends from the condylar gap towards the anterior proximal end portion (10) of the femoral component (2) along a mathematical curve (17). The mathematical curve (17), when looking onto the anterior side of the femoral component, is canted towards a medial side (18) of the femoral component (2) relative to the sagittal plane when the patellar groove (16) extends proximally. The patellar groove (16) is formed by a concave groove section (19) on the anterior side of the femoral component (2), the groove section (19) having a groove base (20). The femoral component (2) further comprises a medial ridge section (21) and a lateral ridge section (22) which are disposed adjacent the groove section (19) and each have a convex shape. The medial ridge section (21) forms the medial condyle (13) and a medial extension (23) to the medial condyle (13) towards the a

A tibial support of an artificial knee joint, comprising a main tibial support body (100) and a tibial support platform (200), wherein the main tibial support body (100) is wing-shaped, a central axis thereof being vertical to the tibial support platform (200). A plurality of hollow screw holes is provided at the upper part of the main body (100). The tibial support platform (200) is located above the main tibial support body (100). The surface of the tibial support platform (200) is an organic polymer material layer matching a tibial liner. The hollow screw holes in the tibial support are sealed by the polymer material layer. Because a tibial support of an artificial knee joint adopts a high-biocompatibility organic polymer material, physical machining is allowed in an operation, and meanwhile, the surface corrosion of the tibial support is reduced. Hollow screw holes are sealed by means of a polymer material layer, thereby inhibiting joint liquid from entering the holes, and reducing the transportation of particles. Recesses (201) are provided at positions, corresponding to the screw holes, on the polymer surface, thereby aiding in drilling holes and mounting screws in an operation.

The present disclosure provides a shoulder prosthesis. The shoulder prosthesis includes a glenoid component, a humeral component, and an articulation component. The glenoid component includes a glenoid body having a proximal side and a distal side, the distal side shaped to engage with a resected portion of a glenoid cavity. The humeral component includes a humeral body having a proximal side and a distal side, the distal side shaped to engage with a resected portion of a humerus. The articulation component is positionable between the proximal side of the glenoid component and the proximal side of the humeral component, the articulation component configured to be maintained between the glenoid and humeral components, after implantation, by at least one of a deltoid muscle and a rotator cuff.