What is shoulder A-C separation?
A person with shoulder A-C separation has torn the acromioclavicular ligaments. These ligaments hold the clavicle to the acromion of the scapula. The most common cause of shoulder A-C separation is a direct force applied to the shoulder, such as a fall onto the shoulder. The most common cause of shoulder A-C separation is a sports injury.

What are the symptoms of shoulder A-C separation?
Symptoms of shoulder A-C separation include shoulder pain, bruising, swelling, and tenderness. The shoulder may be deformed in someone with a shoulder A-C separation.

How does the doctor treat shoulder A-C separation?
Treatment for shoulder A-C separation may include rest, a sling, cold compresses, physical therapy, nonsteroidal anti-inflammatory medications, or narcotic pain medications. Treatment for severe shoulder A-C separation may require surgery.