Should Physiotherapy Be Started Now?
Yes, physiotherapy should be initiated immediately for this patient with a first-time shoulder dislocation at 21 days post-injury, even without orthopedic evaluation. The evidence strongly supports early rehabilitation to optimize functional recovery and prevent complications.
Rationale for Immediate Physiotherapy Initiation
The most recent high-quality evidence demonstrates that early mobilization (starting at 1-2 weeks) does not increase recurrence rates and may reduce treatment failure compared to prolonged immobilization 1. In a 2026 multicentre study of 201 patients, early mobilization with rehabilitation starting at week 2 showed comparable recurrence rates (18.0%) to standard protocols, but importantly, prolonged immobilization beyond 4 weeks significantly increased treatment failure rates (23.4% vs 16.4%) 1.
Specific Rehabilitation Protocol to Follow
At 21 days post-dislocation, the patient should be in Phase 2: Movement and Early Strengthening 2:
Current Phase Goals (Weeks 3-6):
- Range of motion restoration: Gentle, progressive active-assisted and passive exercises
- Early strengthening: Initiate rotator cuff and scapular stabilizer exercises
- Pain management: Use analgesics (acetaminophen or ibuprofen) if needed 3
- Education: Proper positioning, activity modification, and self-management strategies
Specific Exercise Components:
- Stretching: Focus on external rotation and horizontal adduction, avoiding aggressive end-range movements 3
- Strengthening: Progressive isotonic exercises for rotator cuff and periscapular muscles 4
- Scapular stabilization: Essential to prevent secondary impingement 4
- Core strengthening: Address the entire kinetic chain 4
Evidence Supporting Early Rehabilitation
A 2017 study of 12 athletes with first-time dislocations demonstrated that a 6-week progressive rehabilitation program starting 2 weeks post-injury successfully restored strength and range of motion to match the uninjured shoulder 5. The ARTISAN trial framework supports a single comprehensive physiotherapy session with structured self-management as clinically effective 6, and recent cost-utility analysis shows this approach is cost-effective at £3,373/QALY 7.
Critical Timing Considerations
Do not delay rehabilitation waiting for orthopedic consultation. The British Elbow and Shoulder Society guidelines explicitly support phase-based progression for non-operative management, with rehabilitation central to both surgical and non-surgical pathways 2. The patient is already in the optimal window for Phase 2 exercises (3-6 weeks post-injury).
What to Avoid
- No overhead pulley exercises: These can cause harm 8
- Avoid aggressive passive range of motion: Can worsen shoulder pathology if done improperly 8
- Do not use prolonged sling immobilization: Beyond 3-4 weeks increases treatment failure risk 1
- Avoid cocontraction or tensing to suppress symptoms: Not a helpful long-term strategy 9
Progression Criteria
The patient should advance through structured phases 2:
- Phase 3 (6-12 weeks): Progressive strengthening with increased resistance
- Phase 4 (>12 weeks): Return to sport/activity when pain-free motion and strength achieved
- Criteria-based progression: Must demonstrate adequate strength, range of motion, and pain-free function before advancing
Orthopedic Referral Remains Important
While physiotherapy should start now, expedite the orthopedic consultation to assess for:
- Significant glenoid or humeral head bone loss
- Associated fractures (Hill-Sachs lesions)
- Rotator cuff tears requiring surgical consideration
- Recurrent instability patterns
The orthopedic evaluation will determine if surgical stabilization is ultimately needed, but this does not preclude starting appropriate rehabilitation immediately 10, 2.