Lesser Tubercle Of The Humerus In Anterior View

Description

Lesser tubercle (tuberculum minus) occupies the anterior aspect of the proximal humerus, positioned medial to the intertubercular sulcus (bicipital groove) and inferior to the articular surface of the humeral head. From this anterior viewpoint, the prominence of the lesser tubercle stands out against the smoother contour of the anatomical neck, with the crest of the lesser tubercle tracking inferiorly toward the proximal shaft and the surgical neck. Lateral to it, the greater tubercle region and the lateral lip of the bicipital groove are suggested as adjacent relief, framing the course where the long head of the biceps tendon normally runs. Subscapularis inserts on the lesser tubercle, so this landmark anchors discussions of anterior rotator cuff anatomy, internal rotation strength, and the mechanics of anterior shoulder pain. In proximal humerus fractures, tuberosity displacement patterns are often described relative to the bicipital groove and surgical neck, and an anterior view helps differentiate lesser-tubercle fragments from greater-tubercle involvement, a distinction that changes fixation strategy and postoperative expectations. Small detail matters. The fixed lighting and crisp bony margins support teaching of palpable and surgical landmarks, including orientation during deltopectoral approaches and during anatomic total shoulder arthroplasty where a lesser tuberosity osteotomy or subscapularis peel is planned and later repaired. Use this illustration in upper-limb osteology labs, orthopedic surgery lectures on proximal humerus fractures and shoulder arthroplasty, or as a labeled figure for musculoskeletal textbooks and exam prep materials focused on attachments and surface anatomy. It also suits clinical handouts explaining subscapularis injury, biceps tendon pathology within the intertubercular sulcus, and why anterior landmarks guide operative exposure. Anatomical accuracy verified by SciePro's Medical Advisory Board.