The human joint consists of a cavity made up of bone and surrounding soft tissue, ligaments, and skin. When a joint is diseased, it can have symptoms such as pain. So how can you find out what’s going on inside the joint? At this time, you can make several small holes in the skin of the joint and put in a camera. Through the wire, you can transmit the image you see to the TV screen, so that the situation inside the joint can be clearly seen, so that you can carry out an examination of the situation inside the joint. When combined with surgical instruments such as knives, scissors, forceps, planer, and plasma ablation, it is possible to treat joint diseases. Arthroscopy can be divided into shoulder, elbow, wrist, hip, knee, and ankle arthroscopy depending on the application site. Currently the most commonly used is knee arthroscopy. So which diseases are suitable for treatment by arthroscopy? At present, the following are common in clinical practice: 1, treatment of various acute and chronic injuries of joints; such as meniscus injury and cruciate ligament injury rupture after various traumas such as sports, etc., can be examined by arthroscopy, and according to the situation, arthroscopic surgery can be performed at the same time. Arthroscopy can be used to loosen the stiffness and straightness of joints caused by certain adhesions, restore some joint functions, and also repair the ligaments and tendons around the joints, and some patients with osteoarthritis can also be cleaned up by arthroscopy. 2. Clear diagnosis; clear intra-articular lesions. Such as joint inflammation, or rheumatoid arthritis patients, especially which by a variety of blood tests still can not be clearly diagnosed, you can perform arthroscopic synovectomy biopsy, which can help clarify the diagnosis and can also perform synovectomy at the same time, remove part of the lesion, to some extent can relieve the patient’s symptoms. Arthroscopy is also indicated for patients with swollen joints, redness of the skin, increased skin temperature and other joint infections. 3.For some intra-articular fractures, they can be repositioned and fixed under arthroscopy, or assisted repositioning and fixation under arthroscopy. 4, can be removed through arthroscopy intra-articular foreign body (free body, joint rat, etc.), 5, other cases; such as joint deformation, joint pain, inflexible activities, before doing joint surgery can be treated by arthroscopy. Arthroscopy has replaced traditional open surgery in the treatment of many joint diseases and has yielded better results. However, whether or not arthroscopic surgery can be performed should be determined by a specialist at the hospital.