Patient Summary

Probable Diagnoses

1. Distal Supraspinatus Tendinosis with Rim-Rent (Partial-Thickness Articular-Surface) Tear — Primary Diagnosis

• 23 mm tear at the footprint/bone-tendon interface
• Retraction of tendon fibers noted
• Fluid signal extending into the conjoint tendon and infraspinatus — indicating extension of the rotator cuff injury (likely a large/near-massive tear complex)

2. Insertional Subscapularis Tendinosis with Partial-Thickness Tear

• PDFS hyperintensity at the subscapularis insertion confirms concurrent involvement

3. Subacromial Impingement Syndrome

• Decreased acromiohumeral distance on MRI confirms mechanical impingement, which is the underlying pathomechanism driving the cuff degeneration

4. Subacromial-Subdeltoid Bursitis + Subscapularis Bursitis

• Mild, secondary to the rotator cuff pathology above

5. Acromioclavicular Joint Osteoarthritis

• ACJ osteoarthritic changes seen — contributes to subacromial narrowing and impingement

6. Subchondral Cystic Changes of Humeral Head

• Consistent with chronic rotator cuff disease and degenerative change; no frank arthrosis of the glenohumeral joint yet

Differential Considerations

Next Steps in Management

Immediate (Conservative — First-Line for this 72-Year-Old)

1. Activity modification — avoid overhead activities, repeated forward flexion >90°
2. NSAIDs / oral analgesics — for pain and inflammation control (with GI/renal caution given age)
3. Physiotherapy — structured rotator cuff strengthening and scapular stabilization program (6–12 weeks minimum)
4. Subacromial corticosteroid injection — judicious use for pain relief, especially given bursitis; avoid if surgery is being planned (avoid injections within 6 months of any potential surgical repair)

If Conservative Management Fails (6–12 weeks)

1. Orthopedic surgery referral — for consideration of:
   • Arthroscopic debridement ± conversion repair for partial-thickness tears that fail conservative treatment
   • The 23 mm rim-rent tear with tendon fiber retraction and infraspinatus extension makes this a significant tear complex — surgical repair may ultimately be needed
   • At age 72, reverse shoulder arthroplasty becomes an option if massive/irreparable tear with arthropathy develops
2. PRP (Platelet-Rich Plasma) injection — an emerging option for partial-thickness tendinopathy in elderly patients not fit for surgery (discuss with orthopedic surgeon)

Additional Workup to Consider

• Plain X-ray shoulder (AP, outlet view) — assess acromion morphology (Type II/III increases impingement risk), ACJ osteophytes
• Baseline bone density (DXA scan) — given age 72F, osteoporosis assessment relevant before any surgical planning
• CBC, ESR, CRP, RF, anti-CCP — to exclude an inflammatory/rheumatoid component (subscapularis + supraspinatus involvement bilaterally warrants ruling out)

Key Decision Point for Surgery