Animation exhibiting a 3D visualization taken from human scanned data. The anterior view of a knee joint is shown developing advanced symptoms of arthritis. Connective tissue such as the femoral condyle, lateral collateral ligament, lateral and medial menisci, anterior and posterior cruciate ligaments, and interosseous membrane are visible. At the earlier stages of osteoarthritis, no spur (growth) development is visible on the bone, however there is minor wear on the femoral condyle. At late stage, there is little space between bones in the joint area, prevalent spur (growth) development on the bone, and the cartilage is almost non-existent. Arthritis at this stage will cause severe discomfort and stiffness.