[The acromioclavicular joint]

Area of Science:

• Orthopedic Surgery
• Sports Medicine
• Shoulder Anatomy

Background:

• Acromioclavicular (AC) joint instability and osteoarthritis are common causes of shoulder impairment.
• Accurate diagnosis and classification are crucial for effective management.

Purpose of the Study:

• To provide a comprehensive overview of AC joint instability and osteoarthritis.
• To discuss diagnostic criteria and treatment strategies, including surgical interventions.
• To detail the modified Weaver-Dunn procedure for persistent AC joint issues.

Main Methods:

• Review of the Rockwood classification for acute AC joint dislocations.
• Discussion of conservative and surgical treatment options.
• Detailed presentation of the modified Weaver-Dunn procedure.

Main Results:

• The Rockwood classification aids in understanding acute AC joint dislocations.
• Both conservative and surgical treatments can be effective, with surgery often indicated for persistent instability.
• Resection of the lateral clavicle is an effective treatment for AC joint osteoarthritis.

Conclusions:

• Management of AC joint instability and osteoarthritis requires careful consideration of the specific pathology.
• The modified Weaver-Dunn procedure offers a viable surgical option for complex cases.
• Osteoarthritis of the AC joint should be considered in all patients with shoulder pain.