acromioclavikulærleddet

Acromioclavicular joint is a common site for injury. It is formed by the articulation of the acromion, a part of the scapula (shoulder blade), and the distal end of the clavicle (collarbone). This joint allows for a limited range of motion, primarily serving to connect the arm to the rest of the skeleton. It is a relatively small joint, supported by several ligaments that help to stabilize the clavicle against the acromion.

Injuries to the acromioclavicular joint are most frequently caused by direct trauma to the shoulder, such as a fall onto the point of the shoulder or a direct blow. This can result in a sprain, where the ligaments are stretched or torn, or a complete dislocation, where the clavicle is significantly displaced from the acromion. The severity of these injuries is often graded based on the degree of ligamentous damage and displacement.

Symptoms of acromioclavicular joint injury typically include pain at the top of the shoulder, swelling, and tenderness. In more severe cases, a visible deformity, often described as a "step-off," may be present where the end of the clavicle appears to be sticking up. Treatment depends on the grade of the injury and can range from conservative measures like rest, ice, and pain management for mild sprains, to surgical intervention for severe dislocations to repair or reconstruct the damaged ligaments. Rehabilitation through physical therapy is a crucial part of recovery to restore function and strength to the shoulder.