title: Valgus-flexion osteotomy for middle-aged patients with advanced osteoarthritis of the hip: a clinical and radiological evaluation.
abstract: We followed up 34 secondary osteoarthritis patients with 38 hips treated by valgus-flexion osteotomy between 1979 and 1985. The average age of the patients at surgery was 45 years and the follow-up period ranged from 5 to 11 years. After surgery, the clinical evaluations were made according to the JOA Hip Score which remained unchanged in all 38 hips for 5 years. After 6 years there were some hips whose score declined with time. It was found that the preoperative extension-flexion range was the factor that was most closely associated with the result of the surgery (p less than 0.01). Radiological examination at 5 years revealed that the joint space had been widely broadened and the trabecular structure nearly normalized in 23 hips (60.5%), while 15 hips (39.5%) showed a slight degree of joint space broadening and were left with sclerosis and pseudocysts. After a lapse of 10 years or more, in 13 hips out of 10 patients, seven were found to have osteoarthritic changes and revision had to be done by THR in 2 patients. Valgus-flexion osteotomy can therefore be said to provide one of the useful means to preserve joints when employed in middle-aged patients with secondary OA.
authors.affiliation: Department of Orthopedic Surgery, School of Medicine, Kitasato University, Tokyo, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Itoman
authors.forename: K
authors.initials: K
authors.lastname: Yonemoto
authors.forename: M
authors.initials: M
authors.lastname: Sekiguchi
authors.forename: M
authors.initials: M
authors.lastname: Yamamoto
mesh_terms: D000328:Adult; D005069:Evaluation Studies as Topic; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000601:surgery*; D010027:Osteotomy / Q000379:methods*; D011859:Radiography; D012189:Retrospective Studies