Anatomical Neck Of The Humerus, Anterior View

Description

Proximal humerus anatomy dominates the frame, with the humeral head positioned superiorly and medially and the anatomical neck forming a narrow circumferential groove immediately distal to the articular cartilage margin. From the anterior viewpoint, the lesser tubercle sits anterior and medial to the greater tubercle, and the intertubercular sulcus (bicipital groove) descends between them toward the proximal diaphysis. Inferior to these landmarks, the proximal shaft broadens as it approaches the region typically referenced clinically as the surgical neck, creating a useful contrast between the true anatomical neck and adjacent metaphyseal contour. Understanding the anatomical neck matters because it marks the attachment of the glenohumeral joint capsule and lies adjacent to the articular blood supply of the humeral head, a relationship that helps explain avascular necrosis risk after proximal humeral trauma. Fractures through the anatomical neck are less common than surgical neck fractures, but when present they raise concern for compromised head perfusion and intra-articular involvement. The fixed anterior perspective also supports teaching the rotator cuff footprint context: the subscapularis tendon inserts on the lesser tubercle anteriorly, while the greater tubercle insertion facets lie more laterally, just beyond the best-lit edge of this view. Small groove, big consequences. Use this illustration in upper limb anatomy teaching (osteology of the brachium), in orthopedic and radiology education to differentiate anatomical neck, surgical neck, and tubercular landmarks, or in publishing to support chapters on proximal humerus fracture classification and shoulder arthroplasty exposure planning. Anatomical accuracy verified by SciePro's Medical Advisory Board.