Acromioclavicular separation

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[edit] Discussion of Acromioclavicular separation

[edit] Classification of Acromioclavicular separation

  • Type 1: Radiographs appear normal but tenderness is present over the AC joint.
  • Type 2: Complete tear of the acromioclavicular ligaments. The clavicle is superiorly displaced by less than half of its own width.
  • Type 3: Complete tears of both the acromioclavicular and coracoclavicular ligaments. Displacement greater than half of the width of the clavicle is present.
  • Type 4: Similar to type 3 except there is also posterior displacement of the distal clavicle.
  • Type 5: Distal clavicle is displaced futher superiorly than in a type 3 separation. Distal clavicle penetrates muscle.
  • Type 6: Inferior displacement of the clavicle.

[edit] Imaging Findings for Acromioclavicular separation

  • As above.

[edit] Images

  • Radiograph demonstrates a right type 3 acromioclavicular separation

[edit] See Also

[edit] External Links

[edit] References for Acromioclavicular separation