Journal Article shoulder arthroplasty shoulder replacement Glenohumeral instability Radiographic analysis Reverse total shoulder arthroplasty glenoid bone loss Anterior shoulder instability Etiology Humeral morphology MRI analysis Osteoarthritis Rotator cuff Rotator cuff repair Rotator cuff tear Shoulder replacement Total shoulder arthroplasty Tuberosity morphology acromial stress fracture bone grafting deltoid etiology glenohumeral osteoarthritis glenoid retroversion labral repair patient-reported outcomes revision revision Latarjet revision arthroscopic Bankart repair revision shoulder stabilization