Intertrochanteric osteotomy for 33 cases of osteoarthritis and subluxation of the hip joint was performed at our clinic from July, 1956 to December, 1965.
Methods of the operation were displacement osteotomy in 17 cases, displacement varus osteotomy in 10, displacement valgus osteotomy in one and varus osteotomy in 5.
The results in 26 cases from one to 5 years after the operation were obtained as followings:
1. In majority of the cases, pain in the hip disappeared or diminished, and 76 per cent of 26 cases was satisfied with the results of the operation.
2. The range of motion of the hip did not mostly improve, and in some cases it decreased slightly.
3. Radiological findings were improved in 62 per cent of 26 cases.
4. Although varus osteotomy for congenital subluxation of young adults was excellent, it was discouraging for osteoarthritis of the dislocated hip.
5. Effect of the osteotomy seemed mostly to last long.