Acromioclavicular Ligament, Anterior View

Description

Positioned at the superior aspect of the shoulder girdle, the acromioclavicular ligament spans the anterior surface of the acromioclavicular joint, bridging the lateral end of the clavicle to the medial margin of the acromion of the scapula. From this anterior perspective, the distal clavicle sits medial and slightly anterior to the acromion, while the scapular spine continues posteriorly from the acromion toward the body of the scapula. The proximal humerus lies inferior to this complex at the glenohumeral articulation, with adjacent ribs forming the posterolateral thoracic wall deep to the scapula. Small joint. Big consequences. Disruption of the acromioclavicular ligament is the defining soft tissue injury in low grade AC separations after a direct blow to the lateral shoulder, and its integrity determines whether the distal clavicle remains reduced against the acromion or begins to translate superiorly under trapezial and sternocleidomastoid pull. For surgeons, this anterior view clarifies where the ligament is assessed and repaired during open or arthroscopic AC stabilization, and why it is discussed alongside the coracoclavicular ligament complex when grading Rockwood injuries. Palpation and stress testing in clinic focus on this precise articulation. Educators can drop this plate into gross anatomy and musculoskeletal modules to differentiate the acromioclavicular joint from the glenohumeral joint, and to teach how periarticular ligaments guide scapulothoracic rhythm. Orthopedics and sports medicine publications will also find it well suited for explaining AC joint sprain mechanisms, physical exam landmarks, and operative reconstruction concepts. Anatomical accuracy verified by SciePro's Medical Advisory Board.