==Structure== ===Ligaments=== The joint is stabilized by three ligaments: Superior Acromioclavicular Ligament This ligament is a quadrilateral band, covering the superior part of the articulation, and extending between the upper part of the lateral end of the clavicle and the adjoining part of the upper surface of the acromion. It is composed of p...
The joint formed by the acromion of the scapula and the acromial extremity of the clavicle. ... (12 Dec 1998) ... 
the point at which the clavicle joins with the acromion.
The articulation between the acromion process and clavicle.
The joint between the clavicle and the acromion.
Type: Term Definitions: 1. a plane synovial joint between the acromial end of the clavicle and the medial margin of the acromion. Synonyms: articulatio acromioclavicularis
Acromioclavicular joint: 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 acromioclavicul...