AC Joint Separation

What is AC Joint Separation?

AC joint dislocation or separation, also known as shoulder separation, is a condition characterized by damage to the ligaments that connect the acromion to the collar bone. As a result, the bones do not line up properly, causing joint pain and instability.

Causes of AC Joint Separation

Causes include:

• A fall on the shoulder
• Lifting heavy objects
• A sports injury

Symptoms of AC Joint Separation

Symptoms include:

• Pain
• Weakness in the arm or shoulder
• Loss of motion
• Swelling
• Bruising

Diagnosis of AC Joint Separation

Diagnosis can be made based on discussion of your symptoms and a physical examination of the shoulder. A shoulder X-ray may be ordered to confirm the diagnosis of AC joint separation.

Treatment for AC Joint Separation

Conservative treatment is usually effective, but in cases of a severely unstable joint, surgery may be considered. The treatment methods include:

Conservative method:

• Medications: anti-inflammatory pain medications help to reduce pain and swelling.
• Rest: You will be instructed to avoid activities that provoke pain and to use a sling to immobilize your shoulder and arm.
• Ice: An ice pack can be applied for 15-20 minutes at a time to reduce swelling and pain.
• Physical therapy: Specific exercises can be done to help strengthen the shoulder muscles.

Surgery:

Your doctor will make one or more incisions over the AC joint to put the bones back into appropriate position and stabilize the joint with heavy sutures and/or a tendon graft.