Distal clavicular erosion (differential)
Erosion or absence of the distal ends of the clavicles may be seen in a wide range of conditions.
Differential diagnosis
Bilateral erosions
- atraumatic distal clavicular osteolysis: due to repetitive microtrauma; classically described in weightlifters, but can affect anyone performing repetitive overhead lifting and carrying
- hyperparathyroidism
- subchondral bone resorption; usually symmetric with osteopenia, abnormal trabecular pattern
- the acromion is normal, but the sternoclavicular joint may be affected
- rheumatoid arthritis
- bilateral or unilateral changes with soft tissue swelling, subchondral osteoporosis and erosion of the outer third of the clavicle
- acromial erosions may occur later in the disease process
- scleroderma
- psoriatic arthropathy
- cleidocranial dysostosis
- pyknodysostosis (rare)
- progeria (rare)
Unilateral erosion
- rheumatoid arthritis
- post-traumatic distal clavicular osteolysis
- myeloma
- metastases
- osteomyelitis
See also
- mnemonic (SHIRT Pocket)