Case-based Approach to the Management of AC Joint Injuries – An International Perspective (2021 Annual Meeting)-Case-based Approach to the Management of AC Joint Injuries

Case-based Approach to the Management of AC Joint Injuries - An International Perspective-Mulcahey

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Video Summary

This presentation reviews acromioclavicular (AC) joint anatomy, injury mechanisms, classification, diagnosis, and management. A case of a 59-year-old male with a type 2 AC separation after a fall highlights clinical features, imaging findings, and conservative treatment with physical therapy. The AC joint allows scapular-clavicle gliding, stabilized by AC and coracoclavicular (CC) ligaments, which control horizontal and vertical stability. The Rockwood classification (Types 1 to 6) guides injury severity assessment, with Types 1-2 managed nonoperatively, Type 3 treatment controversial, and Types 4-6 often requiring surgery. Horizontal instability and scapular dyskinesia are important complications impacting function. Diagnosis involves physical exam tests and specific imaging like the Zanca view. Recent studies show nonoperative outcomes for Type 1-2 injuries are generally good, while Type 3 may need individualized treatment based on instability and patient demands. The AC joint is critical for shoulder motion, and injury management balances injury severity, symptoms, and functional needs.

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Dr. Mary Mulcahey

Keywords

Acromioclavicular joint

AC joint injury

Rockwood classification

Type 2 AC separation

Nonoperative management