From Jan 1992 to May 1993, 45 cases (46 femurs) with fractures of distal half of femoral shaft were treated by CAIN and were followed up for an average of 34.5 months. The excellent rate was 97.8%. ?

• 临床治疗46例股骨干中下及下部骨折，平均随访34.；5个月，优良率达97