I. What is arthroscopic surgery? A system consisting of a cold light source, fiber optic cable, lens, cable and monitor is an arthroscopic system. During arthroscopic surgery, the surgeon makes a small incision (we call it an access) of about 1 cm or less in the joint space to insert the arthroscope into your joint so that the surgeon can get a good view of the condition inside your joint. In addition, at least one other small incision (access) needs to be made in another location so that the surgeon can insert additional instruments to locate and treat the lesion. Because arthroscopic surgery requires only a few small incisions, most patients are able to recover more quickly and with less postoperative pain than with open surgery, which is the greatest advantage of arthroscopic surgery. The main application of arthroscopic surgery 1.Knee joint: cruciate ligament injury, meniscal injury, synovitis, patellofemoral joint disease, knee adhesions, cartilage injury, intra-articular fracture, etc. 2.Shoulder joint: shoulder dislocation, acromioclavicular impingement, rotator cuff injury, upper glenoid labrum injury, frozen shoulder, acromioclavicular joint lesion, suprascapular nerve entrapment, etc. 3.Elbow joint: elbow joint adhesions, cartilage injury, tennis elbow, osteoarthritis, synovial disease, etc. 4.Carpal joint: deltoid cartilage injury, carpal bone syndrome, tendon sheath cyst, etc. 5.Hip joint: femoral head acetabular impingement syndrome, labral injury, popping hip, round ligament injury, cartilage injury, synovitis, etc. 6.Ankle joint: ankle joint impingement syndrome. Ligament injury, cartilage injury, synovial disease, etc.