Bankart Repair vs Latarjet Procedure: Anterior Instability, Glenoid Bone Loss and Rehab
In short
Recurrent anterior shoulder dislocations require soft-tissue repair or bone block transfer. Compare Bankart repair and the Latarjet procedure, bone loss rules, and rehab protocols.
In this guide (5 sections)
Pathomechanics of Recurrent Anterior Shoulder Dislocation
The shoulder is the most frequently dislocated major joint in the body, with over 95 percent of dislocations occurring anteriorly.
During traumatic anterior dislocation (arm forced into abduction and external rotation), the humeral head shears off the anteroinferior glenoid labrum and inferior glenohumeral ligament (IGHL) complex, termed a Bankart Lesion.
In repetitive dislocations, recurrent impacts fracture and erode the anterior glenoid rim (bony Bankart / glenoid bone loss) and create an impaction defect on the posterolateral humeral head (Hill-Sachs lesion).
Bankart Repair vs Latarjet Coracoid Transfer
Surgical selection is dictated by the percentage of glenoid bone loss and the 'on-track / off-track' Hill-Sachs engagement status.
| Surgical Parameter | Arthroscopic Bankart Repair | Open Latarjet Bone Block Transfer | Clinical Decision Metric | |
|---|---|---|---|---|
| 1. Primary Mechanism | Soft-tissue labral re-attachment with suture anchors | Transfers coracoid process bone block with conjoint tendon to anterior glenoid | Bone loss < 15-20%: Bankart; Bone loss > 20%: Latarjet. | |
| 2. Biomechanical Triple Effect | Restores anatomical labral bumper and IGHL tension | Triple effect: bone augmentation, sling effect of conjoint tendon, capsule repair | Latarjet creates dynamic muscular sling during abduction/ER. | |
| 3. Dislocation Recurrence Rate | 10 to 20% in young contact collision athletes | Extremely low (< 3 to 5%) in contact collision sports | Latarjet is gold standard for rugby, kabaddi, and wrestling. | |
| 4. External Rotation Limits | Limit ER to <= 20-30 deg for 4-6 weeks to protect labrum | Limit ER to <= 30 deg for 4 weeks to protect subscapularis split | Protect soft-tissue repair vs subscapularis tenotomy. |
Phase-Wise Instability Rehabilitation Protocols
Rehabilitation progresses from structural protection to dynamic neuromuscular dynamic stability.
- Phase 1: Sling Protection (Weeks 0 to 4): Continuous sling wear; gentle passive forward flexion up to 90 degrees; external rotation restricted strictly to neutral or 20 degrees; zero active internal rotation against resistance (protecting subscapularis).
- Phase 2: Progressive Active Motion (Weeks 5 to 8): Wean from sling; achieve active forward flexion to 140 degrees; gradually restore external rotation toward 45 degrees in scapular plane.
- Phase 3: Dynamic Rotator Cuff and Rhythmic Stabilization (Weeks 9 to 16): Closed kinetic chain quadruped weight-bearing, rhythmic manual perturbations at 90 degrees elevation, and resisted internal/external rotation bands.
- Phase 4: Return to Collision Sports (Months 6+): Contact drills permitted only after achieving full painless range of motion, normal rotator cuff strength, and passing functional stability tests.
Kabaddi and Contact Sports in India
Kabaddi raiders and wrestlers in India face extreme anterior shoulder dislocating forces during tackles. In this population, isolated Bankart repairs have high failure rates exceeding 30 percent.
Sports surgeons favor the Latarjet procedure for contact athletes, followed by physiotherapy focusing on dynamic pectoralis and subscapularis co-contraction.
Frequently Asked Questions
What is the 'sling effect' in a Latarjet procedure?
The conjoint tendon (short head of biceps and coracobrachialis) remains attached to the transferred coracoid bone block. When the arm is in vulnerable abduction and external rotation, this muscle tendon is stretched taut across the front of the joint, acting as a dynamic hammock that prevents anterior dislocation.
How long does the transferred bone block take to fuse in a Latarjet?
Rigid screw fixation compresses the coracoid bone graft against the glenoid neck, with solid bony fusion typically confirmed on CT scan at 6 to 8 weeks post-operatively.
Why is external rotation permanently reduced slightly after shoulder stabilization?
A minor loss of 5 to 10 degrees of terminal external rotation is intentional and common, reflecting anatomical tightening of the lax anterior capsule and subscapularis to ensure joint stability.
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