Acromioclavicular joint injury - Rockwood III

Case contributed by Bálint Botz


Right shoulder injury sustained while skateboarding, positive piano key sign.

Patient Data

Age: 25 years
Gender: Male

Initial x-ray upon presentation to the ER


The right clavicle is displaced superiorly compared to the acromion, the AC joint is widened, the coracoclavicular distance is increased. 

Control study a month later


Control x-ray a month later shows anatomical situation following fixation with wire. 

Case Discussion

The findings are in line with a type 3 acromioclavicular joint injury according to the Rockwood classification system.

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