Acromioclavicular (AC) joint sprains (separation) are injuries to the ligaments at the joint where the clavicle (collarbone) attaches to the acromion (roof of the shoulder) of the scapula (shoulder blade). These ligaments attach the clavicle to the acromion and to the coracoid (another part of the scapula). AC joint separations are graded one through six, from least to most severe. Patients with high grade four through six, and some grade three AC injuries, require early surgery. The goal of surgery is restore the normal relationship of the clavicle to the acromion (part of the shoulder blade) and repair/reconstruct the acromioclavicular and coracoclavicular ligaments. Patients with continued symptoms after failure of proper non-operative management of lower grade one through three AC injuries are also candidates for surgery.
Normal Anatomy
Grade of AC joint injuries
Contraindications to Surgery
- Ongoing infection may need surgery and antibiotics to clear the infection before this type of surgery can be performed.