acromioclavikulare

Acromioclavicular joint, also known as the acromioclavicular (AC) joint, is a synovial joint located at the outer aspect of the shoulder. It is formed by the articulation of the acromion process of the scapula with the clavicle. The joint is stabilized by the acromioclavicular ligament, which is composed of the superior and inferior acromioclavicular ligaments, and the coracoclavicular ligament. The AC joint allows for a small degree of movement, primarily gliding and minimal rotation.

The AC joint is susceptible to injuries, particularly acromioclavicular separations, which occur when the ligaments are torn or stretched beyond their limits. These injuries can result from direct trauma, such as falls or contact sports, or from repetitive stress, such as overhead activities. Symptoms of an AC joint injury may include pain, swelling, and a sensation of instability in the shoulder.

Diagnosis of an AC joint injury typically involves a physical examination and imaging studies, such as X-rays or MRI. Treatment options range from conservative measures, such as rest, ice, compression, and elevation (RICE), to surgical intervention for severe or recurrent injuries. Rehabilitation programs may include physical therapy to restore range of motion and strength.

The AC joint plays a crucial role in shoulder stability and function, and its proper functioning is essential for activities of daily living and athletic performance. Understanding the anatomy, function, and common injuries of the AC joint is important for healthcare professionals and athletes alike.