title: Distal femoral varus osteotomy for lateral osteoarthritis of the knee: a minimum ten-year follow-up.
abstract: Distal femoral varus osteotomy (DFVO) may be indicated for symptomatic lateral compartment gonarthrosis associated with valgus deformity in younger, active patients. Thirty-three consecutive DFVOs (31 patients) with a minimum follow-up of ten years (mean 15.1, range 10-25) were reviewed. Fifteen DFVOs were converted to total knee arthroplasty (TKA) and one DFVO was awaiting TKA, reaching an overall failure rate of 48.5% at a mean of 15.6 years (range 6-21.5). Of the remaining 17 DFVOs, ten (58.8%) had good or excellent results, two (11.8%) had fair results and five (29.4%) had poor results. Mean modified Knee Society scores improved significantly (p < 0.01) from 36.8 preoperatively to 77.5 at one year post DFVO. DFVO is a viable treatment alternative for lateral compartment gonarthrosis. Conversion to TKA is expected to be required in approximately half of the patients at a mean of 15.6 years.
authors.affiliation: Department of Orthopedics, Mount Sinai Hospital, Toronto, ON, Canada. yonasofi@gmail.com
authors.forename: Yona
authors.initials: Y
authors.lastname: Kosashvili
authors.forename: Oleg
authors.initials: O
authors.lastname: Safir
authors.forename: Allan
authors.initials: A
authors.lastname: Gross
authors.forename: Guy
authors.initials: G
authors.lastname: Morag
authors.forename: Dror
authors.initials: D
authors.lastname: Lakstein
authors.forename: David
authors.initials: D
authors.lastname: Backstein
mesh_terms: D000328:Adult; D001178:Arthroplasty / Q000009:adverse effects / Q000379:methods*; D019645:Arthroplasty, Replacement, Knee; D005260:Female; D005269:Femur / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D016916:Joint Deformities, Acquired / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D007719:Knee Joint / Q000473:pathology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000150:complications / Q000503:physiopathology / Q000601:surgery*; D010027:Osteotomy / Q000009:adverse effects / Q000379:methods*; D016059:Range of Motion, Articular; D020127:Recovery of Function; D012086:Reoperation / Q000379:methods; D012189:Retrospective Studies; D012720:Severity of Illness Index; D016896:Treatment Outcome; D055815:Young Adult