Abnormal scapula morphology Scapulothoracic dissociation 2025-05-04T15:27:15Z Scapulothoracic dissociation may be associated with a laterally displaced scapula with an ipsilateral distracted clavicular fracture (most common type), acromioclavicular joint separation or less commonly sternoclavicular joint disruption, without or with concomitant injuries to the ipsilateral subclavian or axillary vessels and the brachial plexus. An injury consisting of a laterally displaced scapula with separation of the ipsilateral acromioclavicular joint, disruption of the ipsilateral subclavian vessels and brachial plexus, and an intact overlying skin.