Os acromiale with impingement

Case contributed by Dr Andrew Dixon

Presentation:

Sport associated shoulder pain.

Patient Data:

Age: 26
Gender: Male
Modality: X-ray

Os acromiale

Modality: MRI

Hypointense line traversing the distal acromion in keeping with an os acromiale with a fibrous synchondrosis. There is oedema of the os together with focal effusion of the subjacent subacromial bursa consistent with bursitis from impingement.

Case Discussion:

Os Acromiale with subacromial bursitis related to rotator cuff impingement.

MR images show hypointense line traversing the distal acromion in keeping with an os acromiale with a fibrous synchondrosis. There is oedema of the os together with focal effusion of the subjacent subacromial bursa consistent with bursitis from impingement.

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