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Acromioclavicular joint injury (type II)

Case contributed by Dr Jeremy Jones


Right shoulder trauma.

The distal clavicle is elevated beyond the acromion with widening of the joint space. The coracoclavicular distance is not significantly increased and therefore, this represents a type II injury.

Case Discussion

Acromioclavicular injuries are common and can easily be overlooked. Ensure that the inferior surface of the clavicle and acromion are aligned. If they are not, think ACJ injury and use the Rockwood classification. If alignment is normal, look carefully at the joint space - type I injuries can be subtle and even occult on a plain x-ray.

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Case information

rID: 35958
Published: 18th Mar 2018
Last edited: 13th Aug 2019
Inclusion in quiz mode: Included
Institution: Leeds Teaching Hospitals NHS Trust

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