Anterior shoulder dislocation, which is actually a clinical manifestation of glenohumeral instability, has a history of discovery dating back to 2500-3000 B.C. Hippocrates invented the method of resetting anterior shoulder dislocation and the anatomical features of the shoulder joint in the 5th century B.C. The bony anatomy of the human shoulder joint is characterized by a large head (humeral head) and a small fossa (scapular glenoid fossa). This structure results in a flexible shoulder joint, but flexibility of movement means lack of stability. Therefore, the shoulder joint is easily dislocated during trauma, especially anterior-inferior dislocation. However, the current rate of shoulder dislocation is unknown. Regarding the treatment of anterior shoulder dislocations. Misconceptions about the treatment after the initial dislocation: 1. Most patients are only protected by a sling for a few days or even not protected after the shoulder joint manipulation, and the shoulder joint dislocation is not treated by a suitable method of braking after the dislocation. 2. The tissue damage caused by the dislocation is not completely evaluated. Dislocation is usually accompanied by injury to the glenoid lip and joint capsule in front of the joint, fracture of the articular pelvis in front, fracture of the humeral head and rotator cuff injury in the back. This becomes a recurrent dislocation. Treatment and fixation of primary dislocation. After the initial dislocation, you need to go to the hospital to perform manual repositioning. After the repositioning, you need to take pictures and MRI to assess the degree of damage to the shoulder joint structure, and after the assessment, you need to fix the shoulder joint to the internal rotation position, and gradually increase the shoulder joint mobility. Recurrent dislocation is usually defined as more than 3 repeated dislocations, with essentially biomechanical structural instability of the shoulder joint, usually with damage to the glenoid, humeral head, glenoid labrum and ligamentous structures, and usually requiring surgical treatment. There are two types of surgical treatment, both of which have their advantages and disadvantages. One is minimally invasive treatment with arthroscopy and the other is open surgery with small incisions. Arthroscopic surgery allows the torn glenoid labrum cartilage to be re-sutured to the bone of the glenoid using anchor staples, repairing one of the causes of the dislocation. Some surgeons also simultaneously suture the posterior capsular ligament of the shoulder joint to the posterior aspect of the humeral head to prevent dislocation by reducing the external rotation of the humeral head and keeping it from rotating to where it can be dislocated. Arthroscopic surgery does not require release of the anterior subscapularis tendon, and postoperative recovery is rapid. However, arthroscopic surgery cannot be done to repair bone defects with bone block grafting, so it is only suitable for fresh dislocations that are not severe and few in number. The recurrence rate is higher because the cause of dislocation is released less often. Surgical time takes 3 hours and more. Small incision open surgical repair is also performed by anchor stapling, where the residual labrum tissue is gathered as much as possible and sutured to the bone edge of the shoulder glenoid along with some of the muscle to fix it. If there is a defect in the bone, the humeral head can be blocked from dislocating by fixing a bone block with screws, or alternatively, a partial rostral transposition of the rostral process with bone graft. Finally, the muscle and tendon portions outside the shoulder capsule are tightly sutured. In this way, from the inside out, most of the pathological basis of the recurrent shoulder dislocation is corrected and the chance of further dislocation is much less. The technical requirements of open surgery are relatively simple, and the operation time is less than 1 hour, which reduces the operation time and can reduce the risk of surgery. However, open surgery will loosen the anterior subscapularis tendon, and postoperative recovery is relatively long.