Fractures of t4e distal femur are difficult to treat. because of its proximity to the knee joint, poor bony matrix, and anatomic configuration and there is a wide range of potential complications such as ankylosis, infection, post-traumatic arthritis, malunion, and nonunion in the treatment of these fractures. Until a few years ago, conservative management was considered superior to internal fixation of supracondylar fracture of the femur. With the development of new fixatian divices and advancement of techniques, the results of treatment of these fractures have improved. The following clinical results were shown by analyzing 51 cases of distal femur fracture treated with open reduction and internal fixation., in the department of Orthopedic surgery, College of Medicine, Kyung Hee university from Jan. 1986 to Oct. 1991. 1. The follow-up period was average 24.5 Mo. ranging from 18 Mo. to 50Mo. 2. Age distributian at the time of operation was average 42.7 Yrs. ranging form 17 Yrs. to 78 Yrs. and the ratio between male and female was 2:l. 3. The most common cause of injury was traffic accident and twenty seven patients (5Z.9%) had associated injuries in the other parts, and the most frequently associated fractures were tibiofibular and patellar fractures. 4. According to the Miillers classification, there were Z8 patients of type A, 9 patients of type B, 14 patients of type C. 5. 8 cases were fixed with intramedullary nailings, 10 with angfe blade plate, 10 with Judetplates, 14 with Maybone paltes and 9 were fixed with screws. Bone graft was performed in the 9 cases (17.6%) for bony defect and severely comminuted fractures. 6. Excellent or good results were achieved in 23 (82.1%) out of 28 patients of type A, 7 (77.8%) out of 9 patients of type B and 8 (57.1%) out of 14 patients of type C. 7. 10 patients (19.296) had complications, 4 knee ankyloses, 2 fixative loosenings, Z infections, 1 nonnunion and 1 post-traumatic arthritis occurred.