What is an arthroscope: An arthroscope is a rod-shaped optical instrument with a diameter of about 5 mm that is used as an endoscope for the diagnosis and treatment of joint disorders. It can see almost all parts of the joint, which is more comprehensive than cutting into the joint, and is more accurate because the images are magnified. Arthroscopic surgery can often achieve immediate results in the diagnosis of difficult joint diseases and in the treatment of joint injuries that have plagued patients for years. Arthroscopic surgery is the best way to treat articular cartilage injuries. Through arthroscopic cleanup surgery, loose cartilage and cartilage that is about to be stripped is removed; the concave and convex parts are scraped and flattened; and broken and scattered meniscus and bone spurs are removed. The joint free body is chewed up and removed, and the inflamed synovial tissue is excised and removed. This method is characterized by the fact that there is no need to make a large incision on the affected area as in the usual surgery; the insertion port of the arthroscope and the insertion port of the surgical instruments is only 5 mm, so the burden of surgery is small. Therefore, patients who are hospitalized for the surgery are usually discharged in about a week. What are the advantages of arthroscopic surgery? 1.Small incision, beautiful, can avoid late irritation caused by scarring on the joint surface and moving parts; 2.Minimally invasive surgery, less painful, less postoperative reaction, easy for patients to accept; 3.You can move and use the limb early after surgery, avoiding long-term bedside complications, reducing nursing staff and costs; 4.Relatively few intraoperative and postoperative complications; 5.Basically does not affect the muscle structure around the joint. It is possible to perform functional exercises early after surgery to prevent disuse and complications caused by long-term fixation of the joint; 6, it is possible to observe and examine intra-articular lesions in a near physiological environment, which is known as “putting eyes and fingers into the joint”, and it is possible to perform dynamic examination of the joint to improve the diagnostic ability. Certain diseases, such as synovial fold syndrome, are established only through arthroscopy; 7. Arthroscopy can perform surgeries that were difficult to complete with open surgery, such as partial meniscectomy, etc.