What is the recommended initial management for a 57‑year‑old right‑handed woman with adhesive capsulitis (frozen shoulder) of the left shoulder presenting with a six‑month history of dull ache, night pain radiating to the biceps, and marked limitation of internal rotation, external rotation, and flexion?

Initial Management of Adhesive Capsulitis

Begin with a structured physical therapy program focused on gentle stretching and mobilization techniques, particularly emphasizing external rotation and abduction, combined with oral NSAIDs for pain control. 1

Diagnostic Confirmation

The clinical presentation described—six months of progressive pain with global restriction of both active and passive range of motion in all planes (internal rotation, external rotation, and flexion), preserved strength, and night pain—is pathognomonic for adhesive capsulitis. The key diagnostic feature distinguishing this from rotator cuff pathology is the symmetric limitation of passive motion, which you've documented. No imaging is required for diagnosis unless you need to exclude alternative pathology 2, 3.

First-Line Conservative Management

Physical Therapy Protocol

• Gentle stretching and mobilization techniques targeting external rotation and abduction specifically 1
• Active range of motion should be increased gradually in conjunction with restoring alignment and strengthening weak shoulder girdle muscles 4
• A home exercise program may be equally or more effective than supervised physical therapy, with recent evidence showing superior outcomes in shoulder flexion and abduction with doctor-directed home exercises 5
• Avoid overhead pulleys which encourage uncontrolled abduction and may worsen outcomes 1

Pharmacologic Management

• NSAIDs (ibuprofen or naproxen) for pain relief and anti-inflammatory effect 4
• Consider short-term oral corticosteroids (30-50 mg prednisone daily for 3-5 days, then taper over 1-2 weeks) for acute pain exacerbations 4

Adjunctive Modalities

• Ice, heat, and soft tissue massage may provide symptomatic relief 1

Second-Line Intervention: Corticosteroid Injection

If conservative management provides insufficient relief after 6-12 weeks, proceed to intra-articular glenohumeral corticosteroid injection (such as triamcinolone) 6, 1, 3. The evidence shows:

• Moderate to strong evidence supports single corticosteroid injections for short-term improvement in pain and function 6
• Ultrasound guidance is recommended but not required 2
• Combining corticosteroid injection with continued physical therapy provides greater improvement than physiotherapy alone 3

Advanced Injection Techniques

For refractory cases, consider ultrasound-guided glenohumeral hydrodistention combined with intra-articular corticosteroid and potentially a suprascapular nerve block 7, 8. This provides immediate pain relief and increased passive range of motion, enabling more effective physical therapy participation.

Surgical Intervention Threshold

Reserve surgical options (manipulation under anesthesia or arthroscopic capsular release) for patients with minimal improvement after 6-12 months of conservative treatment 3, 9, 8. Note that:

• Manipulation under anesthesia carries risk of humeral fracture or rotator cuff tear 9
• Arthroscopic capsular release provides more controlled outcomes 9, 8
• Most patients (approximately 77%) respond to conservative management within 12-18 months 9

Critical Pitfalls to Avoid

1. Do not assume self-resolution: Traditional teaching suggested complete resolution in 1-2 years without treatment, but recent evidence demonstrates persistent functional limitations if left untreated 3, 10

2. Screen for underlying conditions: This patient requires evaluation for diabetes mellitus and thyroid dysfunction, as adhesive capsulitis has increased prevalence in these populations 3, 9, 7

3. Avoid premature surgical referral: Only 23% of patients in supervised physical therapy programs fail conservative management, and this may be influenced by treatment expectation bias 5

4. Monitor for progression: If pain worsens or range of motion continues to decline despite appropriate conservative management at 6-12 weeks, escalate to injection therapy rather than continuing ineffective treatment 3, 8

Treatment Algorithm Summary

1. Weeks 0-6: Home stretching exercises (external rotation/abduction focus) + NSAIDs + modalities
2. Weeks 6-12: If inadequate response, add intra-articular corticosteroid injection + continue PT
3. Months 3-6: If still refractory, consider hydrodistention with nerve block
4. Months 6-12: If persistent severe limitation, refer for surgical evaluation (arthroscopic release preferred over manipulation)

The natural history suggests most patients improve within 12-18 months with appropriate conservative management, but active treatment is superior to observation alone in preventing prolonged disability 3, 10, 8.