The present invention relates to a knee joint endoprosthesis having a tibial component and a femoral component and a hinge joint for coupling the tibial component and the femoral component so as to be pivotal about a rotational axis, which hinge joint comprises a first joint element and a second joint element coupled therewith so as to be rotatable about the rotational axis, wherein a connecting device is provided having at least one first connecting element and at least one second connecting element for connecting the first joint element to the femoral component, which connecting device defines a connecting position, in which the at least one first connecting element and the at least one second connecting element are engaged in a at least one of non-positive- and positive-locking manner, and an assembly position, in which the first joint element and the femoral component are fully separated from each other.

A total knee replacement prosthesis assembly (10) comprising a femoral component (20), a tibial component (30) having a tibial platform (32), and a bearing component (40), the bearing component having an inferior side (40b) and a superior side (40a), the bearing component being adapted to be arranged between the femoral component and tibial platform when assembled, the tibial platform having a post (36) upstanding from it and the bearing component having a post recess (46) in its inferior side for receiving the post, the bearing component being rotatable about the post when assembled, the post and bearing component each having a transverse bore and the assembly further comprising an axle (60), at least part of the axle being received through the transverse bore (38) in the post when assembled and at least part of the axle being received through the transverse bore (52) in the bearing component when assembled, the axle being configured to provide an axis of rotation between the femoral component and bearing component which is fixed relative to the femoral component and the bearing component in use.

A hinged articulating spacer system for revision knee arthroplasty includes a femur rod for a femur, and a tibia rod for a tibia. The tibia rod is hingedly couplable to the femur rod to form a hinged rod assembly. A pre-formed femoral spacer component includes bone cement impregnated with an antibiotic. The pre-formed femoral spacer defines an opening that receives the hinged rod assembly. A pre-formed tibial spacer component includes bone cement impregnated with an antibiotic. The pre-formed tibial spacer defines an opening that receives the hinged rod assembly.

An elbow prosthesis according to the present teachings can include a stem structure and an articulating component. The stem structure can be operable to be positioned in a bone of a joint. The stem structure can include a stem portion that is operable to be positioned in the bone and a C-shaped body portion having a first retaining mechanism formed thereon. The articulating component can have a second retaining mechanism formed thereon. One of the first and second retaining mechanisms can comprise an extension portion and a first anti-rotation portion. The other retaining mechanism can comprise a receiving portion and a second anti-rotation portion. The articulating component can be advanced from an insertion position to an assembled position, such that the first and second mechanisms cooperatively interlock to inhibit translation and rotation of the articulating component relative to the C-shaped body portion of the stem structure.

A hinged knee prosthesis comprises a tibial component and a femoral component. The tibial component is configured to attach to a tibia. The tibial component has a bearing surface. The femoral component is configured to hingedly attach to the tibial component and rotate relative to the tibial component. The femoral component comprises a medial condyle and a lateral condyle. The medial and lateral condyles have an eccentric sagittal curvature surface configured to rotate and translate on the bearing surface of the tibial component. A method of rotating a hinged knee through a range of flexion is provided. The method fixedly attaches a femoral component to a tibial component. Axial rotation of the femoral component is induced relative to the tibial component when the hinged knee is flexed.

The invention relates to a connection device for connecting a first and a second prosthesis part, in particular of a tibial and a femoral trial prosthesis for trial arrangement on the corresponding bones, wherein the connection device has a first connection element and a second connection element. The first connection element has inner walls, serving as a guide, and a mating piece and serves for arrangement on the first prosthesis part, and the second connection element is enclosed at least in part by the inner walls of the connection element and is movable in a displacement direction along the inner walls relative to the first connection element and has a groove for receiving a portion of the second prosthesis part. The second connection element is movable, in the direction of displacement relative to the first connection element, to an open position in which the second connection element is at least in part pushed out of the first connection element and the groove of the second connection element is at least in part exposed such that the portion of the second prosthesis part can be inserted into and guided out of the groove, and to a closed position in which the second connection element is at least in part pushed into the first connection element and the mating piece of the first connection element lies opposite the groove of the second connection element, in such a way that the portion of the second prosthesis part received in the groove is prevented, by the mating piece of the first connection element, from withdrawal from the groove.

The improved endoprosthetic device surface treatment encourages soft tissue attachment thereto. A porous mesh surface treatment creates on an outer surface of the endoprosthetic device a three-dimensional surface structure similar to cancellous bone. Suture attachment features are provided at various locations around the treated surface structure to initially affix a vascularized soft tissue to the treated surface. As the patient heals the soft tissue grows and infiltrates the porous mesh surface to achieve an attachment strength substantially equal to the surrounding tissue.

An orthopaedic surgical instrument system includes a tibial base trial and a tibial insert trial. An insert adaptor is sized to be positioned in an aperture defined in the tibial insert trial. The insert adaptor includes a base sized to be positioned over a post of the tibial base trial and a locking tab positioned in the base and configured to engage the post of the tibial base trial.

An arthroplasty system may include a first prosthesis to be fixed to a first bone of a joint, a second prosthesis to be fixed to a second bone of the joint for articulation with the first prosthesis, and one or more adapters to be fixed to the first prosthesis for articulation with the second prosthesis to modify the stability of the second prosthesis relative to the first prosthesis. The system may include one or more articular inserts to be coupled to the second prosthesis for articulation with the first prosthesis and/or the adapter(s). The articular inserts may be fixed or mobile bearing relative to the second prosthesis. Each adapter and corresponding articular insert may modify stability differently.

The improved endoprosthetic device surface treatment encourages soft tissue attachment thereto. A porous mesh surface treatment creates on an outer surface of the endoprosthetic device a three-dimensional surface structure similar to cancellous bone. Suture attachment features are provided at various locations around the treated surface structure to initially affix a vascularized soft tissue to the treated surface. As the patient heals the soft tissue grows and infiltrates the porous mesh surface to achieve an attachment strength substantially equal to the surrounding tissue.