plain x ray on knee joint showing joint space narrowing and subchondral sclerosis on medial compartment

affected anatomy arthritis bilateral body bone cartilage compartment disease female fracture happens health hospital human hurt inflammation injury joint joints knee knees lateral left leg medial medical medicine narrow narrowing osteoarthritis osteophyte osteoporosis pain patient plain ray rheumatism rheumatoid right sclerosis showing skeleton space spur standing subchondral suffering surgery thickening xray