akromioklavikulaarinen

The akromioklavikulaarinen joint, often abbreviated as AC joint, is a crucial articulation in the shoulder girdle. It is formed by the junction of the acromion, a bony process of the scapula (shoulder blade), and the distal end of the clavicle, commonly known as the collarbone. This syndesmosis, a type of joint where bones are united by a ligament, allows for a limited but essential range of motion, contributing to the overall mobility and stability of the shoulder.

The AC joint is supported by several ligaments, including the acromioclavicular ligament, which directly connects the acromion and the clavicle, and the coracoclavicular ligaments (trapezoid and conoid ligaments). These ligaments play a vital role in stabilizing the joint and preventing excessive movement.

Injuries to the AC joint are relatively common, particularly in athletes involved in contact sports or activities that involve falls onto an outstretched arm. These injuries, often referred to as AC joint separations or sprains, can range in severity from mild ligament strains to complete dislocations of the joint. Symptoms typically include pain, swelling, and a visible deformity at the top of the shoulder. Treatment options vary depending on the grade of the injury and may involve conservative measures such as rest, ice, and physical therapy, or surgical intervention in more severe cases.