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(A) A 15-year-old boy with an isolated closed fracture of the right femoral shaft was treated by antegrade intramedullary nailing with trochanteric fossa insertion. (B) The 14-month postoperative radiographs showed fracture-healing, and the patient was pain-free. (C) Twenty-one months after the injury, radiographs of the right hip showed early collapse of the femoral head that was consistent with avascular necrosis.
