Acromioclavicular joint injury - type II (MRI)
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Acromioclavicular joint injury is seen as followed:
Clavicle elevated but not above the superior border of the acromion
Acromioclavicular ligament: ruptured
Joint capsule: ruptured
Coracoclavicular ligament: sprain
Deltoid muscle: partially torn
Trapezius muscle: partially torn
Acromion type II also is noted.
The patient referred to us with a history of shoulder pain and immobility after direct shoulder trauma. Regarding the imaging findings, this is a type II acromioclavicular joint injury according to Rockwood classification.