Mathematical study on the guidance of the tibiofemoral joint as theoretical background for total knee replacements. novel total knee replacement by rolling articulating surfaces. In vivo functional measurements and tests.
The natural tibiofemoral joint (TFJ) functions according to a roll-glide mechanism. In the stance phase (0-20 degrees flexion), the femur rolls backwards over the tibia plateau, while further flexion causes increased gliding. This kinematics is based on the principle of a quadruple joint. The four morphological axes of rotation are the midpoints of the… (More)