Diagnostic Approach and Treatment for Shoulder Labral Tears
Initial Diagnostic Workup
- The American College of Radiology recommends obtaining standard radiographs first with three views: anteroposterior (AP) in internal and external rotation plus an axillary or scapula-Y view to rule out fractures and bony pathology 1, 2
- MR arthrography is the gold standard for diagnosing labral tears, with sensitivity ranging from 86% to 100% for detecting labral injury 3, 4, 5
- For acute dislocations, non-contrast MRI may be preferred over MR arthrography 5, 6
- CT arthrography is comparable to MR arthrography for Bankart and Hill-Sachs lesions but should be reserved for patients with MRI contraindications 7, 3, 4
Conservative Management
- Implement a structured 3-month conservative program before considering advanced surgical intervention 8
- Pain control with acetaminophen or NSAIDs (ibuprofen) if no contraindications exist 8
- Subacromial corticosteroid injection can be considered if pain is related to rotator cuff or bursal inflammation 8
- Initial phase of physical therapy: Gentle stretching and mobilization techniques focusing on external rotation and abduction 8
- Later phase of physical therapy: Progressive strengthening exercises for rotator cuff and scapular stabilizer muscles 8
- Return to normal activities only after achieving pain-free motion and adequate strength 8
Surgical Intervention
- Failure of conservative management after 1-3 months is an indication for surgery 1, 8
- Recurrent instability despite appropriate rehabilitation is an indication for surgery 5, 2
- Significant glenoid bone loss (up to 10% of patients with recurrent instability) that may require bone grafting 5
- Younger patients have higher risk of persistent instability and benefit more from surgical stabilization 5, 2
Critical Pitfalls to Avoid
- Never rely on AP radiographs alone—axillary or scapula-Y views are mandatory to avoid missing posterior dislocations (missed in >60% with AP alone) 2
- Do not overlook associated injuries, particularly rotator cuff tears in older patients (>40 years) and bone loss in younger patients with recurrent instability 5, 2