Patent attributes
A knee joint prosthesis is configured to move between an extended position and a flexion position. The knee joint prosthesis includes a femoral component configured to be mounted to a femur, and a tibial component configured to be mounted to a tibia. The tibial component is configured to engage the femoral component to form the knee joint prosthesis. A post is fixedly connected to one of the femoral component and the tibial component and has a helical surface at a terminal end thereof. A recess is defined on the other of the femoral component and the tibial component and has a helical surface. The helical surfaces of the post and recess are configured to engage in order to cause relative rotation between the femoral and tibial components as the knee joint prosthesis moves between the extended and flexion positions.
