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Introduction. Charcot neuroarthropathy is a progressive, deforming pathology of the bone and joints, especially affecting the knees and ankles. Although it is rare, it leads to considerable morbidity. The treatment of Charcot arthropathy of the knee and ankle remains controversial. Many authors suggest that knee involvement is an absolute contraindication to total knee arthroplasty. In recent years, however, several studies have shown satisfactory results for total knee arthroplasty. In the ankle, external fixators have recently been advocated by many authors. Their main advantages are that they permit monitoring of soft tissue healing and avoidance of more invasive surgery. Simultaneous Charcot knee and ankle joint surgery involving total knee arthroplasty (TKA) and ankle arthrodesis is rare and challenging and can lead to major complications if not addressed appropriately. Case Presentation. The case of a 71-year-old woman who underwent simultaneous total knee arthroplasty and ankle arthrodesis for severe neurosyphilitic Charcot arthropathy (Eichenholtz classification stage III) and was evaluated three years after surgery is reported. Deformities of the left knee joint and ankle developed. The left leg was shorter by 20 mm, with a functional leg length discrepancy. The patient was limping, and marked varus instability of the left ankle was observed during the stance phase of walking. Postoperatively, the patient was able to walk without assistance, confirming improvement of mobility. Conclusion. To the best of our knowledge, this is the first report of combined, simultaneous neurosyphilitic Charcot knee and ankle joint surgery involving TKA and ankle arthrodesis. It was an effective surgical method that maintained leg length and achieved satisfactory alignment without an autologous iliac bone graft.

Simultaneous Total Knee Arthroplasty and Ankle Arthrodesis for Charcot Neuroarthropathy