Single-Stage Total Knee Arthroplasty and Open-Wedge Distal Femoral Osteotomy for Osteoarthritis with Femoral Shortening and Extra-Articular Varus Deformity

A 76-year-old female patient with a history of pyogenic arthritis of the right knee in childhood presented with severe osteoarthritis of the right knee with 24-mm femoral shortening and severe extra-articular femoral varus deformity. She received single-stage total knee arthroplasty (TKA) combined with a medial open-wedge distal femoral osteotomy and achieved good postoperative clinical and radiological results.This case illustrated that extra-articular open-wedge distal femoral osteotomy and TKA performed simultaneously may be efficacious for severe extra-articular deformities with femoral shortening.