Mathys Medical Ltd.

Thomas L Wickiewicz

Joseph David Lipman

Russell F Warren

Daniel Delfosse

Timothy M Wright

Donald L Bartel

Walter Supper

Christoph Fankhauser

Frank Hoffman

A prosthesis for repairing a knee is made with an insert sandwiched between a femoral component and a tibial tray. The parts are shaped so that both the femoral component and the tibial tray will slidingly interface with the insert during motion of the knee. At regions where the femoral component interfaces with the insert during extension and during an initial range of flexion of the knee, the femoral component's radius of curvature (R) for flexion rotation is larger than its radius of curvature (R) for varus/valgus rotation. In a preferred embodiment, the surface of the tibial tray is convex and spherically curved, and the insert is free to move in both the posterior-anterior direction and the medial-lateral direction with respect to the tibial tray.

Self-aligning knee prosthesis

Growing community of inventors

Franklin Lakes, NJ, United States of America

Thomas L Wickiewicz