The steps of femoral traction are as follows: first, determine the puncture point by drawing a horizontal line from the upper edge of the patella 1-2 cm, and then drawing a vertical line from the anterior edge of the fibular tuberosity to the elevation of the femoral epicondyle, with the intersection of the two lines as the puncture point, after making a mark and routinely disinfecting the local skin and spreading a towel. Second, after local anesthesia, use the tip of the knife at the entry point and poke a small longitudinal incision, and drill the bone round needle perpendicular to the longitudinal axis of the bone. Third, after the tip of the needle reaches the opposite side of the subcutaneous and then do local anesthesia, and poke a small longitudinal port, lead out the steel needle, so that the two sides of the exposed part of the opposite, each end of the insertion of a small cork. Fourthly, after the needle opening is disinfected and covered with dressing, the traction arch is installed and the affected limb is placed on the traction frame and traction is done through the pulley, generally the traction weight is 1/8-1/10 of the body weight and the time is 6-8 weeks.