Recently, the incidence of multiple trauma combined with cerebral injury and multiple long bone fractures has been increased associatied with the high rate of automobile and the industrial accident. When the femur was fractured, it is difficult to reduce accurately and immoblize due to the displacement, because this bone is responsible for the weight bearing and surrounded by the strong muscle groups. Especially, bilateral fracture of femur which was usually produced by high energy trauma was combined with the other injuries. So the treatment & rehabilitation were difficult and recovery period was prolonged.

11 cases with both femoral fractures which were treated at Department of Orthopaedic Surgery, Ewha Womans University Hospital from January, 1984 to December, 1988 were clinically analyzed and the results were as follows.

1. The prevalent age ranged from 20 to 29 years.

2. Among 11 cases, 7 cases were male nad 4 cases were female.

3. The cause of injury was mainly the dash board injury due to the traffic accident. Of 11 cases, 10 were combined with injuried of another sites.

4. The union time was varied from 12 weeks to 18 weeks and average time was 15 weeks.

5. The complication were limitation of motion of knee joint in 5 cases, nonunion in 2 cases, delayed union, angulation and metalic migration in case, each other.

6. Protected parial wt. bearing was performed between 12 weeks and 20 weeks and non protected full wt. bearing was performed between 6 months and 26 months after operation.