Acromioclavicular joint injury (type II)
A man with a history of right shoulder trauma after a fall striking the shoulder against the ground.
MRI Right shoulder
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Coronal T2-weighted fat-saturated MR image shows type II acromioclavicular joint dislocation. Note disruption of all ligamentous fibres around acromioclavicular joint. Sagittal T2-fat-saturated MR image shows oedematous fluid around the coracoclavicular ligaments (rupture of conoid and trapezoid ligaments).
On MRI series we can see a type II acromioclavicular joint injury with the following findings:
- coracoclavicular ligament complex (conoid and trapezoid ligament) has signs of rupture
- blood and fluid are seen in the coracoclavicular interspace