Autologous chondrocyte implantation for cartilage injuries (Cell treatment) This patient had cartilage loss after knee injury and was not able to walk. With new Autologous chondrocyte implantation technique we were able to regenerate cartilage at the site of injury. Within a short period of 3 months he was back to his normal life. He was able to walk, had full knee bending and was able to sit cross legged.