Procedure of hollow nail internal fixation In general,cannulated screw internal fixation refers to multi-pin fixation of intertrochanteric fracture of femur,mainly used for the treatment of elderly intertrochanteric fracture of femur,simple and safe operation. The specific steps are as follows. 1. Perform general anesthesia and use a traction bed to pull the affected limb. 2. The affected limb should be disinfected and covered with towels. 3. About 3cm below the greater trochanter of the femur, a lateral longitudinal incision with a length of about 8cm was made. 4. Cut the skin, superficial fascia, iliotibial tract to reveal the lower part of the femoral greater trochanter. 5. Drilled the hole into the femoral head with Kirschner needle fluoroscopy, and inserted 3 hollow nails to fix the fracture end. 6. Observe the fixed position of the hollow nail under fluoroscopy. If everything is normal, suture the incision. The operation of this operation is simple and safe, it is recommended to go to a regular hospital and operate under the guidance of a professional doctor.