Coxitis Knee ～第 4 報～

（脚長差による検討）

抄録

It is known that severe osteoarthritis of the hip joint develops into secondary osteoarthritis of the knee joint. In the present study, we observed and examined the influence of leg length discrepancy on knee joint alignment of patients. Between November 2002 and August 2004, 120 patients who had one side hip joint disease were studied. The mean age was 62.6 years (from 34 to 95). Patients with leg length discrepancy of 24 mm or less were categorized as group I, 25-49 mm as group II, and 50 mm or more as group III. We evaluated both sides femorotibial angle (FTA), leg length discrepancy on a preoperative rediograph, and %MA in these groups and investigated the relation with knee joint alignment. There is a tendency for the development of valgus position of the knee joint on the short side and varus position of the knee joint on the long side in patients with severe leg length discrepancy of more than 50 mm.