Bankart injury is an avulsion injury of the anterior inferior glenoid labrum of the shoulder at the attachment of the anterior inferior glenohumeral ligament complex. Bankart injuries are often accompanied by abnormalities of the joint capsule, and >30% of patients have lengthening and laxity of the anterior inferior glenohumeral ligament complex. Fibrous Bankart lesion: The joint capsule ruptures and the glenohumeral ligament is torn away from the glenoid with the attached glenoid labrum. The most common injury in anterior shoulder dislocation is the inferior glenohumeral ligament-glenoid labrum complex, the classic Bankart injury, which accounts for 85% of traumatic anterior shoulder dislocations. Bony Bankart lesion: Injury of the inferior glenohumeral ligament-glenoid labrum complex is accompanied by an avulsion fracture of the anterior inferior aspect of the articular glenoid. Due to the bone loss in the anterior and inferior part of the glenoid, the pear-shaped shoulder glenoid can become an “inverted pearl” structure, which is a major factor in joint instability. Clinical manifestations] include pain, interlocking and tendency to dislocate the shoulder joint. Patients often feel that they cannot control their shoulder joints. Diagnosis】 Positive rotational stress test. Imaging manifestations: conventional X-rays often have no abnormal findings. CT can identify the presence or absence of bony defects of the articular glenoid or humeral head. MRI or MRI angiography can show Bankart injury more clearly. Differential diagnosis] [Treatment] varies depending on the patient’s age at the time of the first dislocation. If the patient is younger than 30 years old at the time of the first dislocation, the likelihood of re-dislocation is >80%, and surgery is recommended to repair the torn ligament and glenoid labrum; however, if the patient is older than 30 years old at the time of the first dislocation, the likelihood of re-dislocation is greatly reduced, and conservative treatment can be given first. Conservative treatment: 1. rest and no confrontational sports for 6 months; 2. oral anti-inflammatory and analgesic drugs to reduce pain; 3. active muscle exercise. Surgery: When conservative treatment is ineffective, or if shoulder dislocation occurs again, surgery is required. Arthroscopic or small incision can be made to suture the glenoid ligament and glenoid lip.