The steps of tibial tuberosity bone traction are as follows, the preoperative needle site should be marked, below the lateral tibial tuberosity, the direction of needle entry is from the outside to the inside, the skin is routinely disinfected and a towel is laid, the bone round needle is turned vertically in the longitudinal axis of the bone after the local anesthesia takes effect, and after the tip of the needle reaches the opposite side of the skin, then local anesthesia is done to draw out the steel needle, so that the two sides of the exposed part are opposite to each other, and a small cork or small flat bottle is inserted at each end. After the needle is sterilized and covered with dressing and placed on the traction arch, the affected limb is placed on the traction frame and traction is done through a pulley, generally with a weight of 1/8-1/10, for 6-8 weeks and up to 12 weeks. It is necessary to reset the fracture within 2-3 days after traction, review the X-ray film and give the corresponding treatment if necessary, measure the length of the lower limb daily and compare both sides to adjust the weight and prevent excessive traction. The pinhole is dripped with alcohol three times a day for a week to pay attention to blood circulation and to avoid damage to the epiphysis in children.