Patent ID: 8545571
Filing Date: 2013-10-01
Classification: A61F

Abstract:
1. A knee prosthesis for implanting in a knee joint, comprising: a femoral component; a tibial component including a ball, the femoral component being configured to move relative to the tibial component; and a coupling component interconnecting the femoral component and the tibial component, the coupling component defining an internal cavity including a first spherical end portion and a second spherical end portion, the internal cavity being dimensioned to receive the ball of the tibial component, wherein the ball is repositioned between the first spherical end portion and the second spherical end portion of the internal cavity upon movement of the femoral component relative to the tibial component, and an internal surface of the coupling component includes a cam adjacent the internal cavity, the cam projecting outward from the internal surface and being configured to guide repositioning of the ball between the first spherical end portion and the second spherical end portion when the femoral component moves relative to the tibial component.