title: The correction of severe varus deformity in total knee arthroplasty by tibial component downsizing and resection of uncapped proximal medial bone.
abstract: The clinical and radiologic outcome of 10 patients (12 knees) with a mean varus deformity of 24 degrees (range, 20 degrees to 40 degrees ) treated with total knee arthroplasty (TKA) is presented. We describe a technique of downsizing and lateralizing the tibial component with subsequent removal of the proximal medial tibia flush with the downsized component. At a mean follow-up of 42 months (range, 12 to 64 months), the mean preoperative Knee Society and function scores had improved from 24 and 34 to 94 and 85, respectively, at follow-up. No implant has been revised. At follow-up evaluation, no evidence of osteolysis or radiographic loosening was seen and the mean tibiofemoral angle was 4 degrees of valgus. This technique provides mid-term stable correction and excellent clinical and radiographic results in patients with severe varus deformity.
authors.affiliation: Department of orhopaedic Surgery, Brigham and Womens Hospital, Boston, Massachusettes, USA.
authors.forename: Michael C
authors.initials: MC
authors.lastname: Dixon
authors.forename: Dominik
authors.initials: D
authors.lastname: Parsch
authors.forename: Richard R
authors.initials: RR
authors.lastname: Brown
authors.forename: Richard D
authors.initials: RD
authors.lastname: Scott
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000379:methods; D005500:Follow-Up Studies; D006801:Humans; D016916:Joint Deformities, Acquired / Q000000981:diagnostic imaging / Q000601:surgery*; D007719:Knee Joint / Q000000981:diagnostic imaging; D011474:Prosthesis Design; D011859:Radiography; D013977:Tibia; D013997:Time Factors