New jersey meniscal bearing knee replacement

摘要: A prosthesis for the surgical replacement of a dysfunctional knee joint is disclosed. The includes tibial platform, one or two bearing inserts, and femoral component. In unicompartmental embodiment invention, platform spike securing to tibia. in embodiment, track, which may be curved, slidably engaged dovetail fashion by insert, typically high molecular weight polyethylene. superior surface insert concave spherical, designed engage inferior component generally convex with radius curvature slightly smaller than insert. some embodiments have more differing radii at different points on such surface. Typically are constructed cobalt-chromium alloy. bicompartmental tricompartmental tracks, each engages inserts engage, via their spherical surfaces, mating surfaces curved tracks general not concentric; rather, center falls line normal plane track passing through other track.