Moderate osteoarthritis, illustration 插畫檔

Stage 2 osteoarthritis of a joint, illustration. A 3D anatomical cross-section depicting the moderate stage of osteoarthritis (OA). The illustration shows significant wear and thinning of the articular cartilage, with advanced fibrillation and loss of surface smoothness. The cartilage matrix is undergoing degeneration, and the joint space is narrowing. The underlying subchondral bone shows increased density in response to reduced cushioning