The Anatomical Characteristics Of The Crest Of The Greater Tubercle Of The Humerus

Description

Running along the proximal humerus, the crest of the greater tubercle (crista tuberculi majoris) is presented as a thick, vertical ridge descending inferiorly from the greater tubercle on the lateral aspect of the bone. As the animation progresses, the greater tubercle remains lateral to the humeral head, while the ridge is tracked distally toward the proximal diaphysis, clarifying its continuity with adjacent cortical contours. Rotational turns of the bone establish anterior and posterior relationships, situating the crest between the intertubercular groove (sulcus intertubercularis) medially and the lateral surface of the surgical neck region inferiorly. Orientation is clear. Teaching the crest matters because it anchors how clinicians and learners mentally map the proximal humerus when interpreting radiographs, CT, or surgical exposure around the tuberosities and the bicipital groove. Proximal humerus fractures often involve the greater tubercle, and displacement of this fragment changes rotator cuff mechanics and can contribute to subacromial impingement, so recognizing the ridge and its neighbors helps when describing fracture lines and fragment position. A stepwise, rotating sequence makes the crest easier to distinguish from the adjacent greater tubercle facets and the borders of the intertubercular sulcus, which can look deceptively similar in a single still frame. Use this animation in upper limb anatomy labs, orthopedic modules on proximal humeral fractures, and as a reference visual in manuscript figures or lecture slides discussing bony landmarks around the shoulder and their relation to the bicipital groove. It also supports preoperative teaching for deltopectoral approaches where reliable proximal humeral landmarks guide orientation before fixation or arthroplasty. Anatomical accuracy verified by SciePro's Medical Advisory Board.