AC Joint Sprains (Separated Shoulder)
The AC (Acromio-clavicular) joint is a thick fibrous joint that connects the top of the shoulder blade to the outer end of the collarbone. The joint is required to be strong and supportive and is the primary way in which weight bearing forces are transferred from the upper limb to the rest of the skeleton.
The primary mechanism that will cause this joint and its ligaments to be injured is a force that separates the shoulder away from the collarbone, usually in a downwards direction.
