The Cartilage Restoration Center is headed by Keith S. Feder, MD and Carol Frey, MD. These two orthopedic surgeons have further developed an advanced treatment center for post traumatic osteoarthritis chondral injuries and osteochondritis dissicans of the knee, ankle (talus), shoulder, elbow and hip. Dr. Feder and Dr. Frey have extensive experience in revision surgery. Procedures performed include: microfracture, OATS (Osteochondral Autograft Transfer), ACI (Autologous Chondrocyte Implantation), osteochondral allograft implantation, and osteotomies of the femur, tibia, foot and ankle.