acromioclavicular joint configuration

There is much variation in acromioclavicular 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 :

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

Siehe auch:

• Klassifikation der Akromiontypen nach Bigliani
• acromioclavicular joint
• Impingement der Schulter

und weiter:

• ACJ
• acromioclavicular joint injury grading