Coracoacromial ligament ossification

Case contributed by Dr Matt Skalski


Shoulder pain with limited range of motion.

Patient Data

Age: 70
Gender: Female

A large osseous projection is observed extending from the inferior surface of the acromion, angled towards the coracoid process. 

The osseous projection is outlined in red.

Case Discussion

Isolated ossification of the coracoacromial ligament is a rare finding, and in this case most likely secondary to previous trauma.

Calcification of this ligament is most often due to trauma or renal failure, with the latter often demonstrating more of a tumoral calcinosis. Ossification of the ligament is almost exclusively due to trauma.

Rotator cuff pathology should be highly suspected with this pattern of ossification, with at least a partial tear of the supraspinatus tendon almost guaranteed. 

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Case information

rID: 21721
Published: 13th Feb 2013
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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