Acromioclavicular Joint

The acromioclavicular (AC) joint is a small joint that connects the acromion of the shoulder blade (scapula) to the clavicle, contributing to the stability and smooth movement of the shoulder. It is supported by strong ligaments that maintain proper alignment of the bones. The most common conditions affecting the AC joint include osteoarthritis, sprains, and dislocations, typically resulting from falls or sports-related injuries. Common symptoms include pain at the top of the shoulder, swelling, and restricted shoulder movement. Diagnosis is based on clinical examination and imaging studies, while treatment may be conservative or surgical, depending on the severity of the injury and the patient's functional needs.