Inclusion Criteria:  Age 18-59 years, gender unlimited. Patients with recurrent shoulder dislocation who were judged by clinicians to be suitable for modified flexible fixation Latarjet procedure according to surgical indications (1. Glenoid bone defect>20% 2. Glenoid defect>15% and ISIS>6 3. Glenoid defect>10% and competitive athletes) Volunteers to join the study and sign informed consent  Exclusion Criteria:  Clinical and imaging diagnosis combined with other shoulder diseases, such as frozen shoulder, rotator cuff injury, shoulder joint degeneration. Basic diseases of important organs ( including severe osteoporosis, dysfunction of important organs, connective tissue diseases, neuropsychiatric disorders, epilepsy, etc. )