A Front View Of The Greater Tubercle Of The Humerus

Description

Anteriorly, the proximal humerus rotates into a front-facing orientation so the greater tubercle (tuberculum majus) reads as a broad, irregular prominence lateral to the humeral head and superior to the surgical neck. As the camera settles, the intertubercular sulcus (bicipital groove) becomes the key divider between the greater tubercle laterally and the lesser tubercle medially, with the groove running inferiorly toward the humeral shaft. Subtle surface relief is emphasized across the tubercle’s facets where rotator cuff tendons attach, and the lateral contour of the arm bone is kept dominant in frame to support landmark recognition. Palpation and imaging interpretation both hinge on this topography. Greater tubercle fractures, often from a fall on an abducted arm or during anterior shoulder dislocation, can displace the supraspinatus and infraspinatus insertions and alter glenohumeral mechanics. The animated sequence clarifies how the greater tubercle moves relative to the bicipital groove with humeral rotation, which helps explain why a small change in projection can hide or exaggerate tuberosity fragments on AP and Grashey-type radiographs. Use this animation when teaching upper limb osteology, shoulder anatomy, or rotator cuff biomechanics, and when illustrating orthopedic content on proximal humerus fractures, subacromial impingement, or biceps long head pathology related to the intertubercular sulcus. It also slots cleanly into surgical education material that references the deltopectoral approach and the proximal humeral landmarks used for plate positioning. Anatomical accuracy verified by SciePro's Medical Advisory Board.