Mr. Xiong from Guangxi is 46 years old, in his prime, and is the pillar of his family. Two months ago, a sudden car accident caused him to dislocate his left shoulder joint. After the treatment of manual repositioning at the local hospital, his left shoulder joint was still painful and immobile, and he could not even perform the usual actions of putting on and taking off his clothes. Mr. Xiong then moved around to all major hospitals in Nanning, but was unable to get a clear diagnosis, and the local hospitals were at their wits’ end. Mr. Xiong met Mr. Wang Kun, the director of our department, during our “shoulder joint disease clinic” in December, and he was admitted to our department with a half-hearted attitude. After the preoperative examination, we considered that Mr. Xiong’s left shoulder pain and limitation of movement were caused by “posterior dislocation of the left shoulder with rotator cuff and labrum injury”. Traumatic posterior shoulder dislocation is often caused by rotator cuff injury and glenoid labrum injury, which is one of the more difficult diseases to diagnose and treat in shoulder surgery because of the insidious radiographic presentation and often missed diagnosis. When Mr. Xiong was first admitted to the hospital, he was very resistant to everything in the hospital due to the disease and had a lot of emotional turmoil. After the patient explanation of Director Wang Kun, Deputy Chief Physician Li Zhiyong and Nurse Manager Yang Ye Xiang, he gradually accepted the treatment. In December this year, he underwent “arthroscopic left shoulder joint dislocation reset + posterior Bankart repair + anterior soft tissue filling”. Immediately after the operation, the left shoulder joint was stabilized and no more dislocations occurred, and the activities in all directions became normal. Mr. Xiong was very satisfied with the treatment and actively cooperated with various rehabilitation exercises after the surgery. For patients with recent shoulder dislocations, we recommend that the MR of the affected shoulder joint be reviewed after manipulation to see if there is a combined rotator cuff injury or glenoid injury to avoid posterior shoulder dislocation. It is also important to review the radiographs after manipulation to avoid missing the posterior shoulder dislocation. Arthroscopic treatment is an effective and proven method of treatment. CT 3D reconstruction of a posterior dislocated shoulder Postoperative shoulder x-ray