Objective To discuss the way for treatment of multisegmental fracture of femur by a new interlocking nail (so renamed biorigid nail femur,BNF).

• 目的 探讨一种新型交锁髓内钉 -凹槽交锁股骨髓内钉 (Biorigidnailfemur,简称BNF)治疗股骨多段骨折的方法。