Knee Arthrodesis Using the Masquelet Technique for Postoperative Uncontrolled Infection and Extensor Mechanism-Deficient Total Knee Arthroplasty.

Total knee arthroplasty (TKA) is a widely performed surgical procedure known for its favorable long-term outcomes. However, postoperative infection poses significant treatment challenges and may lead to severe complications. This case involves a 55-year-old woman who developed a patellar fracture following TKA, complicated by deep infection after osteosynthesis and accompanied by loss of extensor mechanism. Despite undergoing multiple surgeries, the treatment process proved difficult. Ultimately, knee arthrodesis with bilateral plates was performed using the Masquelet technique. The postoperative course was favorable, with successful bone union achieved. Although the patient experienced a leg length discrepancy, she regained the ability to walk short distances. Knee arthrodesis employing the Masquelet technique proved effective for infection control, bone regeneration, and management of extensor mechanism deficiency, making it a viable treatment option for managing postoperative infections after TKA.