Acromioclavicular joint dislocation

Case contributed by Yahya Baba
Diagnosis certain

Presentation

Shoulder trauma following a road traffic accident.

Patient Data

Age: 65 years
Gender: Female
  • acromioclavicular dislocation with probable tear of the coracoclavicular ligament

  • bony flecks avulsion from the distal aspect of the clavicle

  • full-thickness tear of the supraspinatus tendon

  • mild articular surface tear of the footprint of the infraspinatus tendon

  • mild soft tissue edema and joint effusion

Dislocation of the right acromioclavicular joint with an elevation of the clavicle above the superior border of the acromion (the coracoclavicular distance is still less than twice normal)

The small bone fragments are best seen on CT.

Case Discussion

Features of an acromioclavicular joint injury type III of the Rockwood classification and a full-thickness rotator cuff tear.

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