Acromioclavicular joint configuration

There is much variation in acromioclavicular (AC) joint configuration which may be confused with pathology. 

The relationship of the acromion to the distal clavicle at the AC joint can be described in the coronal plane as 1, 2, 3:

  • horizontal: normal
  • low lying: associated with shoulder impingement (unfortunately, there are no criteria for distinguishing a low-lying acromion from a high-riding clavicle) 2
  • inferolateral: associated with shoulder impingement

Upper limb anatomy
Share article

Article Information

rID: 844
Section: Anatomy
Tags: stub, cases
Synonyms or Alternate Spellings:
  • AC joint configuration

Support Radiopaedia and see fewer ads

Updating… Please wait.
Loadinganimation

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.