[The kinetostatics of ligament operations on the knee joint--exemplified by tractopexy].

If the iliotibial band should have a satisfactory function in order to improve suture or replacement of the anterior cruciate ligament the best point of fixation for tractopexy is the slope from the lateral femoral condyle to the femoral shaft in its dorsal third. In addition the position of the knee joint at the time of fixation is of importance. The angle should theoretically be 43 degrees.