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Ankle Deformity After High Tibial Osteotomy for Correction of Varus Knee

High tibial osteotomy (HTO) has been an effective method for the treatment of medial compartmental osteoarthritis of the knee. There are numerous reports on the effects of HTO on the knee joint. Although correction of knee varus deformity by HTO or total knee arthroplasty inevitably changes the alignment of the ankle joint, the impact of these procedures on the ankle joint is underreported. We report a case of a 50-year-old female patient who suffered from unilateral ankle pain after undergoing HTO for severe varus deformity and osteoarthritis in both knee joints, which was treated with realignment surgery of the ankle joint.