Rotatable and translatable joint prosthesis with posterior stabilization

摘要

A joint prosthesis system includes a tibial bearing insert, a tibial tray, a separate stabilizing post and a femoral component that are joinable to each other. The tibial bearing insert is mounted so that it can both rotate and translate with respect to the tibial tray. The stabilizing post and the femoral component cooperate to force roll back of the femoral component with respect to the tibial components.