Ipsilateral fracture of the femur and tibia is difficult to treat because it is often comminuted and combined with severe soft tissue injury. And The result of treatment is poor in most cases. The thirty-four cases were treated at Pusan Paik Hospital from March, 1992 to February, 1995. The result were as follows; 1. The bony union time was shorter in the intramedullary nailing than other methods. 2. There were less complications in the group of used intramedullary nailing than other methods. 3. The intramedullary nailing was relatively good treatment method for ipsilateral fracture of the femur and tibia.