What is the definition or description of: ac joint separation repair?

Shoulder Separation: The a-c joint is the joint between the acromion (outer shoulder blade) and the clavicle (collarbone). An a-c joint separation involves injury to the joint capsule and ligaments that stabilize the joint. Injuries can range from mild to severe.

AC separation: Surgery is still controversial. Repair could include pinning, screw fixation, and/or ligament reconstruction, or some combination thereof. Pinning or screw fixation has shown limited long-term success without concomitant ligament reconstruction. New ligament reconstruction techniques seem promising, but limited long-term studies exist.