Abstract
The objective of this study is to compare the kinetics and kinematics between the Cruciate Retaining (CR) type and the Posterior Stabilized (PS) type of the artificial knee joints from the results of a 3D mathematical model analysis of knee joint motion. Our 3D model included not only the femur-tibia joint but also the patella-femur joint can introduce variations of contact point trajectories, contact pressure on the articular surfaces. The simulation results demonstrated that, highly stable joint articulation was confirmed for the PS, yet stress concentration or disarticulations was found if the engaging or disengaging between the post and cam did not occur at an appropriate time.
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