Differential diagnosis of distal clavicular resorption:
- Chronic rotator cuff tear: Decreased acromiohumeral distance.
- Iatrogenic: Sharp, flared margin without periosteal reaction.
- Rheumatoid arthritis: Characteristically, the undersurface is resorbed
- Distal clavicylar osteolysis/post-traumatic osteolysis:
- Hyperparathyroidism (shown above): Bilateral and symmetric. Soft tissue calcifications.
- Progressive systemic sclerosis: Scleroderma. Bilateral and symmetric and may involve acromion. Soft tissue calcification may be seen.
- Septic joint:
Differential diagnosis of distal clavicular resorption:
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