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A 53‐year‐old man who had necrosis of the femoral head, after internal fixation with three cannulated screws using the traditional procedure. (A) Preoperative anteroposterior (AP) and lateral hip X‐ray images. (B) Postoperative X‐ray images. (C) 18 months after the operation, the fracture healed. (D) 28 months after the operation, necrosis and collapse of the femoral head could be seen on the radiographs.
