Abstract
A 41-year-old man underwent Total Knee Arthroplasty with NexGen Legacy Constrained Condylar Knee (LCCK) system to treat his nonunion of distal femur, stiff knee, and malunion of tibia plateau. The treatment involved femoral and tibial stems and PS polyethylene. As a result, his knee range of motion improved, and he no longer experienced pain. After two years, he resumed work without any signs of loosening or stiffness.