Reported herein is the case of a 45-year-old woman with knee involvement due to rheumatoid arthritis. She had a total knee arthroplasty with a rupture of the quadriceps tendon 1 month later. Surgical repair of the rupture was performed following the Scuderi technique plus reinforcement with Dacron (Lig Aid, Levallois, Cedex, France) tape cerclage. An above-knee walking-plaster cast was applied with the knee in full extension for 6 weeks. The functional result was good 1 year after surgery.