The long-term outcome of high tibial osteotomy: a ten- to 20-year follow-up.
We carried out a prospective study of 132 patients (159 knees) who underwent closed-wedge high tibial osteotomy for severe medial compartment osteoarthritis between 1988 and 1997. A total of 94 patients (118 knees) was available for review at a mean of 16.4 years (16 to 20). Seven patients (7.4%) (11 knees) required conversion to total knee replacement. Kaplan-Meier survival was 97.6% (95% confidence interval 95.0 to 100) at ten years and 90.4% (95% confidence interval 84.1 to 96.7) at 15 years. Excellent and good results as assessed by the Hospital for Special Surgery knee score were achieved in 87 knees (73.7%). A pre-operative body mass index > 27.5 kg/m(2) and range of movement < 100 degrees were risk factors predicting early failure. Although our long-term results were satisfactory, strict indications for osteotomy are required if long-term survival is required.
Akizuki
S
S
Department of Orthopaedic Surgery, Nagano Matsushiro General Hospital, 183 Matsushiro, Nagano City 381-1231, Japan. sakizuki@hosp.naganomatsushiro.or.jp
Shibakawa
A
A
Takizawa
T
T
Yamazaki
I
I
Horiuchi
H
H
D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000379:methods* / Q000592:standards; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery*; D010027:Osteotomy / Q000379:methods* / Q000592:standards; D010147:Pain Measurement; D016059:Range of Motion, Articular; D012086:Reoperation; D013977:Tibia / Q000601:surgery*; D013997:Time Factors