Partial prosthesis for replacement of knee joint - comprises condylar component implanted into lower end of femur, cooperating with shaped tibial plate supported by bone-embedded metal bar

摘要

The prosthesis includes a femoral condylar component (5) cooperating with a tibial plate (6). A metal bar member (4) is implanted transversely in the upper part of the tibia, with a number of downwardly-projecting spikes (7) to anchor it in the spongy tissue (9) of the bone. The tibial plate of the prosthesis bears against the upper surface of the bar, and is shaped with a slightly concave upper surface (9) to cooperate with the condylar component. The condylar component, which is implanted into the tissue of the lower end of the femur, has a concave lower surface for rotary sliding engagement with the tibial plate. ADVANTAGE - Improved bone anchorage and load-bearing properties.