Arthroscopy can be used to treat various inflammatory conditions of the joints, such as traumatic arthritis, synovitis, and exfoliative osteochondritis dissecans. 1. Traumatic arthritis: refers to the inflammation of joints caused by joint injuries, which usually manifests as joint pain and difficulty in movement. Arthroscopic surgery can alleviate the symptoms of early and mid-stage traumatic arthritis patients. 2. Synovitis: Synovitis is a thin, soft membrane covering the joints, which can be irritated and lead to synovitis. Usually manifested as joint pain, fever, swelling, clinically can be used under the arthroscope radiofrequency ablation, so that the necrosis of the diseased synovial tissue, has reached the goal of treatment. 3. Exfoliative osteochondritis dissecans: it is a kind of joint disease that refers to ischemic necrosis of local articular cartilage and subchondral bone, which is usually manifested as joint pain, and the symptoms will be aggravated after activities. Clinically, arthroscopy can be used to repair the defective cartilage for faster recovery. In addition, arthroscopy is also effective in treating impingement syndrome, capsular adhesions, rotator cuff injuries and other conditions.