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
This study is a stack
Coronal T2
fat sat
This study is a stack
Sagittal
T2 fat sat
This study is a stack
Axial T2
fat sat
This study is a stack
Sagittal
T1
This study is a stack
Axial
T1
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Info
  • 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 oedema and joint effusion

Frontal
Frontal
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Info

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)

This study is a stack
Axial bone
window
This study is a stack
Axial
non-contrast
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Info

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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