Joint, acromioclavicular
The acromioclavicular (AC) joint is located between the acromion (a projection of the scapula that forms the point of the shoulder) and the clavicle (the collar bone).
This is a gliding type of joint.
The ligaments that serve to support and strengthen this joint are called the capsular; superior and inferior acromioclavicular; articular disk; and coracoclavicular (trapezoid and conoid) ligaments.