Cruciate replacing artificial knee

A knee joint prosthesis configured to move between an extended position and a flexion position, the knee joint prosthesis comprising:

• a femoral component configured to be mounted to a femur;
• a tibial component configured to be mounted to a tibia, the tibial component configured to engage the femoral component to form the knee joint prosthesis;
• a post fixedly connected to one of the femoral component and the tibial component, and a cam recess defined on the other of the femoral component and the tibial component, the cam recess having a concave cam surface that is configured to engage a rounded and convex end surface of the post in the extended position of the knee joint prosthesis;
• and
• an artificial ligament fixedly connected to the femoral component and the tibial component to simulate either an anterior cruciate ligament or a posterior cruciate ligament,
• wherein the post and the ligament are oriented cross-wise as viewed in a sagittal plane, a frontal plane, or both the sagittal plane and the frontal plane.