How should a long‑term rheumatoid arthritis patient on chronic immunosuppressive therapy (aromocoyle‑pritis) with left shoulder anterior and superior pain, night pain, and inability to raise the arm above shoulder height after a fall be evaluated and managed, given one month of physical therapy with minimal improvement and a pending MRI?

Obtain MRI of the left shoulder without contrast as the next diagnostic step, followed by rheumatology consultation to optimize RA management before considering surgical intervention.

Diagnostic Evaluation

Your patient requires MRI without IV contrast of the left shoulder immediately. 1 In the setting of chronic shoulder pain (beyond the acute phase of your patient's fall one week prior), MRI without contrast is the appropriate imaging modality to evaluate for rotator cuff pathology, inflammatory changes, and structural damage. The 2025 ACR Appropriateness Criteria specifically note that in subacute or chronic settings, noncontrast MRI is the preferred initial advanced imaging study.

Key Clinical Features Suggesting Rotator Cuff Pathology:

• Anterior and superior shoulder pain (classic rotator cuff distribution)
• Night pain (highly suggestive of rotator cuff tear)
• Inability to raise arm above shoulder height (functional impairment consistent with significant rotator cuff involvement)
• Failed physical therapy after one month (suggests structural pathology requiring imaging)

RA-Specific Considerations:

Ultrasound and MRI are superior to clinical examination for detecting joint inflammation in RA patients 2, and given her 15+ years of disease with prior similar symptoms, you must evaluate for:

• Active inflammatory synovitis
• Rotator cuff tears (common in RA shoulders due to chronic inflammation and tendon weakening)
• Glenohumeral joint erosions or cartilage loss
• Subacromial/subdeltoid bursitis

The EULAR imaging guidelines 2 emphasize that MRI can detect inflammation and damage at earlier time points than conventional radiography, which is critical in your patient who has failed conservative management.

Management Algorithm

Immediate Steps:

1. Order MRI shoulder without contrast (not MR arthrography, as joint effusion from chronic inflammation may provide adequate visualization) 1
2. Obtain plain radiographs (AP, lateral, axillary views) if not already done—these remain the initial imaging technique to detect damage per EULAR guidelines 2
3. Rheumatology consultation to assess current RA disease activity and optimize immunosuppressive therapy

Treatment Pathway Based on MRI Findings:

If MRI shows rotator cuff tear:

• Surgical consultation for consideration of repair (though outcomes in RA patients are guarded due to tissue quality) 3
• If tear is irreparable or patient is poor surgical candidate: continue conservative management with activity modification, NSAIDs (if tolerated), and possible corticosteroid injection

If MRI shows inflammatory synovitis without significant structural damage:

• Intensify RA treatment (consider biologic DMARDs or JAK inhibitors if not already on them) 4, 5
• Intra-articular corticosteroid injection may provide temporary relief 3
• Structured exercise therapy with supervision (FITT principles: frequency, intensity, type, time) 6

If MRI shows glenohumeral arthritis:

• Consider shoulder arthroplasty if pain is intractable and conservative measures fail 3
• Note: Expect limited mobility post-operatively in RA patients 7

Critical Pitfalls to Avoid

Do not continue physical therapy indefinitely without imaging. Your patient has already completed one month with minimal improvement—this is a red flag for structural pathology requiring surgical evaluation. The night pain and inability to elevate the arm are particularly concerning for a rotator cuff tear, which will not improve with therapy alone.

Do not assume this is simply an RA flare. While the timing (one week after fall, similar to prior episode) suggests RA involvement, the mechanism of injury (fall with weight-bearing on opposite arm creating torque) and specific functional deficits warrant structural evaluation.

Beware of infection risk. Your patient is on chronic immunosuppressive therapy ("aromocoyle-pritis"—note: this appears to be tacrolimus based on the drug label provided 8). While septic arthritis is less common in the shoulder, any patient on immunosuppression with joint pain requires vigilance. If she develops fever, warmth, or systemic symptoms, obtain joint aspiration urgently.

Monitoring Parameters

Use validated instruments to track response:

• Numeric Rating Scale for pain (0-10 scale)
• Patient-Specific Complaint instrument for functional limitations
• Active range of motion measurements (forward flexion, abduction, external rotation) 6

Immunosuppression Considerations

The drug label for tacrolimus (aromocoyle-pritis) 8 indicates increased infection risk, including serious infections requiring hospitalization. If surgical intervention becomes necessary, coordinate with rheumatology regarding perioperative immunosuppression management. The medication may need temporary dose adjustment, though this must be balanced against RA flare risk.

Vaccination status should be confirmed per RA management guidelines 4, particularly given chronic immunosuppression and potential surgical intervention.