[Three dimensional kinematics of the knee joint]

The study deals with 3 d-Kinematics and stability patterns according to a knee joint testing machine. During flexion the lateral femoral condyle displays near extension pure rolling, near flexion pure gliding, on the medial side this ratio is vice versa. 41 knee joint specimen provided internal-external transverse rotation during there whole range of motion. Additional varus rotation and medial translation occurred. In osteoarthritis the movement patterns were completely changed.