(A) Anteroposterior radiograph of the right hip of a 74-year-old man with an unstable pertrochanteric fracture (AO/OTA 31A2.2). (B) Postoperative radiograph after closed reduction and fracture fixation with a short intramedullary hip nail; the distance between the distal fracture line and the distal locking screw is 3 cm. (C) Anteroposterior radiograph of the right hip at 3-month follow-up shows fracture healing; the patient was weight-bearing with a cane. (D) Anteroposterior radiograph of the right hip at 12-month follow-up shows complete fracture healing.