Experience of Revision Cases with Metallosis after Total Knee Arthroplasty

Three revision cases with metallosis after total knee arthroplasty are reported. All patients were females in their 70's. They were all diagnosed with osteoarthritis before undergoing primary total knee arthroplasty. Revision arthroplasty was performed 6 to 10 years (average 8 years) after the primary operation. In all cases, metal debris had invaded not only the synovial tissue but also the femoral, tibial and patellar bone, and osteolysis had occurred. Because there was large bone stock deficiency after the removal of the implants, we used stem-extension and augmentation in both the femoral and tibial components in all cases.