title: Navigated osteotomies around the knee in 170 patients with osteoarthritis secondary to genu varum.
abstract: The authors used computer navigation to perform osteotomies around the knee. The purpose of this article is to present the authors' surgical technique and to discuss double-level osteotomy of the femur and tibia to avoid altered joint line obliquity in genu varum deformity. The authors conducted two studies. The first study was a cohort study comparing navigated high tibial osteotomies and conventional high tibial osteotomies. The results showed a 96% reproducibility in achieving a mechanical axis of 184 degrees +/- 2 degrees in the navigated group compared to a 71% reproducibility in achieving a mechanical axis of 184 degrees +/- 2 degrees in the conventional osteotomy group (P < .0015). The second study was a prospective study on double-level osteotomy and showed that the preoperative goal of 182 degrees +/- 2 degrees has been achieved in 91% of patients.
authors.affiliation: Chirurgie Orthopédigue et de Traumatologie du Sport, CHU de Grenoble, Hopital Sud in Echirolles, France.
authors.forename: Dominique
authors.initials: D
authors.lastname: Saragaglia
authors.forename: Jason
authors.initials: J
authors.lastname: Roberts
mesh_terms: D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery*; D010027:Osteotomy / Q000379:methods*; D011446:Prospective Studies; D025321:Surgery, Computer-Assisted / Q000379:methods*