Abstract: An orthopaedic knee component for implanting within a proximal tibia includes a tibial tray with a proximal tibial plateau and a projection extending generally orthogonal to the tibial plateau. The tibial tray also includes a distally extending stem. A bearing is coupled with the tibial plateau and has an articular bearing surface for engagement with a femoral component. The bearing is rotationally movable between a first rotational limit and a second rotational limit about an axis extending generally orthogonal to the tibial plateau. The bearing has a backing surface engaging the tibial plateau which is sized and shaped such that the backing surface is substantially entirely supported by the tibial plateau at any position during rotational movement between the first rotation limit and the second rotational limit.

Abstract: An orthopaedic knee component for implanting within a proximal tibia includes a tibial tray with a proximal tibial plateau and a distally extending stem. The tibial tray also includes a recess extending into the tibial plateau. The recess is configured to define a first rotational stop and a second rotational stop. The tibial tray further includes a generally cylindrical post positioned within the recess. The post extends generally orthogonal to the tibial plateau and defines an axis of rotation. A bearing is carried by the tibial tray and has an articular bearing surface for engagement with a femoral component. The bearing has an opening in which the post is disposed. The opening and the post allow pivotal movement of the bearing relative to the tibial plateau about the axis of rotation. The bearing further has a projection extending into the recess of the tibial tray.

Abstract: A femoral component for a hip prosthesis includes a proximal end shaped in an anatomic manner to form asymmetrical sides. In particular, a lateral side forms an acute angle with an anterior side and a medial side forms an arcuate surface.

Abstract: A prosthetic joint component which is comprised of a metal retainer and a plastic bearing portion which is molded integrally onto the top surface of the metal retainer. The metal retainer includes a plurality of notches spaced apart from each other around the periphery of the retainer. The notches enable the plastic, during the molding process, to flow through the notches to create a thickness of plastic completely surrounding the upper surface and the peripheral edge of the retainer (or metal base plate) and terminating in a lower plastic rim surface which is flush with the perimeter of the lower surface of the metal base plate, forming a strong mechanical interlock between the metal and plastic portions of the prosthetic joint component.

Abstract: An interconnection is provided for a human body implant having a polymeric articular surface member supported by a substantially rigid, metallic base plate. Reversely tapered apertures in the supporting base plate enclose portions of the unitary polymeric surface member, which portions protrude past the general interface of the surface member and base plate.