Total joint replacement means replacing both sides of the weight-bearing surfaces of the affected joint. In the knee, it means replacing both the thin cartilage surface on the lower joint surface, which is the tibia, and the upper joint surface, which is the femur. The joint surface under the kneecap is also replaced. This requires removing the thin cartilage surface and a thin surface of bone for replacement with an artificial implant. At Orthopedic Specialists, our surgeons specialize in reconstruction and replacement of the hip, knee, and shoulder joints.