抄録
A 62-year-old man, had a history of non-union of right femoral fracture sustained about 30 years ago. The fracture was cured after several operative treatments. In August, 2003 he felt suddenly pain in his thigh and was unable to walk. Radiographic examination revealed a refracture at the old femoral fracture site. An operation was performed using the Huckstep nail on August 21, 2003, and he had begun to walk. However, he complained that it became difficult to walk again after sudden onset of thigh pain on April 17, 2004. At that time, the breakage of the Huckstep nail was confirmed by radiographic examination. An interlocking nail fixation and bone graft using the fibula was performed. Both mechanical and biological conditions could have caused non-union of the fracture. Stress shielding at the fracture, caused by too rigid initial fixation of the fracture by multiple screws and damaged tissue surrounding the fracture caused by several operations might have inhibited the fracture healing process. It was considered that non-union of the fracture induced the fatigue fracture of the nail.
