The present application concerns a shoulder prosthesis assembly. The shoulder prosthesis assembly comprises a humeral stem including a first articulating coupling means, a base portion of a substantially disc shaped geometry including a second articulating coupling means. Said first articulating coupling means and said second articulating coupling means connect the stem to the base portion. The ratio between the circumference of the disc shaped base portion and the peripheral thickness of the disc shaped base portion is at least 18:1.

An intervertebral implant component of an intervertebral implant includes an outer surface for engaging an adjacent vertebra and an inner surface. A keel extends from the outer surface and is designed to be disposed in a slot provided in the adjacent vertebra. This keel extends in a plane which is non-perpendicular to the outer surface; and preferably there are two of the keels extending from the outer surface which are preferably offset laterally from one another. In another embodiment, an anterior shelf is provided at an anterior end of the outer surface, and this anterior shelf extends vertically away from the inner surface in order to help prevent bone growth from the adjacent vertebra towards the inner surface. Further in accordance with disclosed embodiments, various materials, shapes and forms of construction of the component and/or keel provide various benefits.

A surgical implant, which in use, provides a barrier between layers of tissue such that tissue on one side of the implant does not adhere to tissue on the other side, the improvement comprising that the implant is made of suitably anatomically shaped surgically acceptable sheet material.

An artificial joint implant (1) comprising a first element (2) with a socket (4) and a second element (3) with a ball head (5), wherein said ball head (5) is insertable in said socket (4) such as to form a ball-and-socket connection between said first element (2) and said second element (3), and the movement of said ball head (5) in said socket (4) is restricted by means of a protrusion (6.1; 6.2) engaged in a groove (7), whereby said protrusion (6.1; 6.2) has a central axis A2 and is protruding from the surface of said socket (4) and said groove (7) is provided on the surface of said ball head (5) or vice versa; said groove (7) is positioned along a great circle of said ball head (5) or of said socket (4), said protrusion (6.1; 6.2) has a shape allowing rotation of the protrusion around its central axis A2 when received in the groove (7); and the surface roughness of the protrusion (6.1; 6.2) and/or of the groove (7) is at most 25 micrometers.

An artificial disc is disclosed. The artificial disc may include a superior endplate having a bi-convex superior surface and a concave inferior surface, and an inferior endplate having a bi-convex inferior surface. The artificial disc may also include a core assembly disposed between the superior endplate and the inferior endplate, and a support assembly disposed on outer surfaces of both the superior endplate and the inferior endplate. The support assembly may be configured to couple the superior endplate to the inferior endplate.

The present application relates to an artificial joint implant comprising a first element with a socket and a second element with a ball head. The socket is at least hemispherical and said ball head is inserted in said socket such as to form a ball-and-socket connection between said first element and said second element. Movement of said ball head in said socket is restricted in at least one degree of freedom by means of a at least one protrusion engaged in a at least one groove, wherein said at least one protrusion is provided on said socket and said at least one groove is provided on said ball head or vice versa.

A temporary disposable spacer device implantable in the human body for treatment of an infected bone seat or a joint seat includes a body provided with at least one coupling surface to the bone seat or joint seat to be treated and recesses along the coupling surface.

A surgical implant, which in use, provides a barrier between layers of tissue such that tissue on one side of the implant does not adhere to tissue on the other side, the implant being made of suitably anatomically shaped surgically acceptable sheet material.

An intervertebral implant component of an intervertebral implant includes an outer surface for engaging an adjacent vertebra and an inner surface. A keel extends from the outer surface and is designed to be disposed in a slot provided in the adjacent vertebra. This keel extends in a plane which is non-perpendicular to the outer surface; and preferably there are two of the keels extending from the outer surface which are preferably offset laterally from one another. In another embodiment, an anterior shelf is provided at an anterior end of the outer surface, and this anterior shelf extends vertically away from the inner surface in order to help prevent bone growth from the adjacent vertebra towards the inner surface. Further in accordance with disclosed embodiments, various materials, shapes and forms of construction of the component and/or keel provide various benefits.

A woven retention device, lattice device and woven patch device that are configured to receive a fastener in a bone hole can be configured to impede biofilm formation. The devices can be made of woven filaments that outline apertures of varying sizes and shapes and can serve as an interface between a fastener and the bone material. The devices can be configured to allow for optimal bone growth while at the same time minimizing the likelihood that biofilm forms thereon. The devices can be made of materials that facilitate soft tissue fixation, and screw-activated expansion.