Learn about AC joint disorders, symptoms, and treatments. Book a consultation with our shoulder specialists today for personalized care.

AC Joint

The acromioclavicular (AC) joint is the meeting point of the acromion and clavicle bones, often indicated with a visible bump in the area. It is a structural joint and not a functional joint. AC joint injuries often occur as a result of a fall or other trauma, which may cause the acromion to move or separate from the clavicle, or cause the ligaments to be stretched or torn. Arthritis can occur in the AC joint, causing pain and swelling. This condition can be seen in weightlifters and workers with jobs that place a heavy demand on their shoulder.

Diagnosis

There is usually a history of a traumatic injury and the physical exam will demonstrate pain, and swelling and bruising around the top of the shoulder at the AC joint. X-rays can be helpful in the diagnosis.

Treatment

Ice and anti-inflammatory medications will reduce the swelling and pain. As the pain and swelling subsides, exercises are used to restore function. If there is chronic pain, a corticosteroid injection into the joint is performed. If the acute separation is severe or if there is chronic unrelieved pain, then surgery is considered.

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Frequently Asked Questions

The acromioclavicular (AC) joint connects the collarbone and shoulder blade. It helps lift and rotate your arm. When this joint becomes injured, it can cause pain and swelling. Dr. Li treats AC joint disorders to restore comfort, strength, and proper shoulder motion.

Pain often follows a fall, a sports injury, or repetitive strain. Over time, cartilage wear can also irritate the joint. Dr. Li identifies whether your pain comes from a shoulder separation or joint inflammation and creates a plan that promotes healing and function.

You may feel pain on the top of your shoulder, swelling, or tenderness when lifting your arm. A bump may appear where the collarbone meets the shoulder. If pain lasts, Dr. Li can diagnose your AC joint injury and guide you toward recovery.

Dr. Li performs a physical exam and checks shoulder motion. X-rays or MRIs show if ligaments or cartilage are damaged. Once he confirms the problem, he designs a custom AC joint treatment plan that fits your activity level and recovery goals.

Yes. Many cases respond well to rest, ice, and physical therapy. Anti-inflammatory medicine and corticosteroid injections can also reduce pain. Dr. Li focuses on non-surgical AC joint treatments first to restore motion and strength before considering surgical repair.

Surgery is usually needed for severe AC joint separations or chronic pain that doesn’t improve with therapy. Dr. Li uses minimally invasive techniques to repair ligaments and align the joint. His goal is to restore stability and get you back to normal activity.

Recovery takes several months depending on the injury. Physical therapy begins soon after surgery to regain motion and prevent stiffness. Dr. Li monitors progress closely to ensure your shoulder recovers strong and stable for long-term comfort.

Yes. Most athletes return once the joint heals and strength returns. Dr. Li tailors rehabilitation programs for each sport to reduce reinjury risk. Proper therapy helps athletes regain confidence and maintain shoulder endurance.

A shoulder separation affects the AC joint where the collarbone meets the shoulder blade. A shoulder dislocation happens when the upper arm bone slips out of its socket. Dr. Li distinguishes between the two and provides the right treatment for each.

Protect your shoulders with strength training and proper posture. Warm up before exercise and use correct lifting form. If shoulder pain appears, early care prevents worsening injury. Dr. Li teaches preventive exercises that keep your AC joint healthy and stable.

Orthopedic & shoulder center is proud to serve patients in bloomington, normal, mclean county, champaign, peoria, and central illinois.

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