Conclusion: It as an effective way to treat femoral supracondylar fracture with retrograde intramedullary nailing.Early exercises could help the function recovery of knee in most cases.

• 结论：股骨髁上逆向交锁钉的应用操作简便、固定牢靠、锁钉定位准确，是治疗股骨髁上骨折的有效方法。