A shoulder separation is not truly an injury to the shoulder joint. The injury actually involves the acromioclavicular (AC) joint. The AC joint is where the collarbone (clavicle) meets the highest point of the shoulder blade (acromion). Separated shoulder, also known as acromioclavicular (AC) joint separation, is a sprain of the ligaments that attach the clavicle (collarbone) to the acromion (highest part of the scapula, or shoulder blade). The sprain can be either partial, with minimal separation of the clavicle and acromion, or complete, which means the bones have come aEmMT.

what is a separated shoulder