The management of subtrochanteric fracture of the femur is one of the most difficult problems. Subtrochanteric area is predominantly composed of cortical bone and highly concentrating portion of stress. So, there is high incidence of Complication after treatment of subtrochanteric fractures. The results were as follows :l. Of 56 cases, 45 occurred in male, 11 in female. 2. The fractures occured mainly between 20 to 40 years of age(55.4%) and mean age was 41.4 years. 3. The most common cause of fracture was traffic accident.(67.9%) 4. According to the Seinsheimer classification, 16 cases were type IIb(most common), 13 type IIIa and 9 type IIIb. 5. 49 cases with treated wutg open reduction and internal fixation and 7 cases conservatively. 6. The average weight bearing time was 14.0 weeks; 13 weeks in operatively treated group and 18.3 week in conservative group. 7. Radiological union was obtained in average 25.1 weeks ; shortest group was type IIc(16 weeks) and longest group was type IV(30 weeks). 8. Complication were as follows; 8 cases of delayed union, 3 nonunion, 4 metallic failures, 7 varus deformities and 1 nail migration. 9. In the cases treated by Judet plate or compression hip screw, there was no complications and relatively short duration of bony union than other implants. So, they are one of the good implant for the treatment of subtrochanteric fracture of the femur.