Injection Acromio-Clavicular Joint eMedicine Procedures

Description: The acromioclavicular (AC) joint is a diarthrodial joint that joins the distal end of the clavicle with the acromion. It is surrounded by a joint capsule in which lies a meniscal disk. The AC ligaments, made up of the superior, inferior, anterior, and posterior ligaments, help with anteroposterior stability and inhibit superior translation. The coracoclavicular ligaments, made up of the trapezoid and conoid ligaments, insert on the coracoid process and provide superior-inferior stability and inhibit AC joint compression.
Stephen Kishner, MD, MHA & Alex Minh Nguyet Tran, MD Updated: Apr 12, 2009