A 31-year-old male sustained oblique fracture of shaft of the right femur by car accident, which was operated on by intramedullary nailing and wiring. The nail was removed after 11 months when the fracture was thought to heal perfectly on X-ray. Four months after removal of the nail, he was suffered from sudden pain in his right thigh when going up stairs, and could not walk. X-ray revealed a transverse fracture at the site of looped wire. The fracture was operated on by intramedullary nailing.
At operation, no corrosion of wire was seen but errosion of the cortex. Partial fibrosis of the bone trabeculae and osteoclasts were found on histological examination.
