The acromioclavicular (AC) joint is a joint between your clavicle ... The repetitive motion causes bone disintegration and damage. Symptoms include pain at the end of the clavicle near the shoulder.

uchc.edu Acromioclavicular (AC) joint injuries are more common than sternoclavicular (SC) joint injuries. There is a spectrum of AC joint traumatic injuries that ranges from a ligament sprain to a ...