Correction of severe valgus osteoarthritis by total knee arthroplasty is associated with increased postoperative ankle s

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Correction of severe valgus osteoarthritis by total knee arthroplasty is associated with increased postoperative ankle symptoms Frank Graef1   · Hagen Hommel2 · Roman Falk2 · Serafeim Tsitsilonis1 · Robert Karl Zahn1 · Carsten Perka1 Received: 26 May 2020 / Accepted: 14 August 2020 © The Author(s) 2020

Abstract Purpose  The aim of this study was to assess the mid-term clinical outcome of the ankle joint after total knee arthroplasty (TKA) in high-grade valgus osteoarthritis. Methods  In this case–control study, n = 36 patients with a preoperative mechanical tibiofemoral angle (mTFA) ≥ 15° who underwent TKA between December 2002 and December 2012 were included. The control group (mTFA