4862b, amputate, amputated, amputation, amputation, amputations, arthrosis, below, bone, bones, break, breaks, broken, cap, caps, crush, distal, exh4862b, extremities, extremity, femoral, femur, femurs, fibula, fibular, fracture, fractured, fractures, joint, joints, knee, kneecap, kneecaps, knees, leg, legs, lower, orthopaedics, orthopedics, patella, patellae, patellar, patellas, severed, tibia, tibial, 2