A Frontal View Of The Crest Of The Greater Tubercle On The Humerus

Description

Rotating in a frontal (anterior) orientation, the proximal humerus is centered on the crest of the greater tubercle, the short vertical ridge continuing inferiorly from the greater tubercle onto the lateral aspect of the upper humeral shaft. The head of the humerus sits medial and slightly posterior relative to the tubercle region, while the intertubercular sulcus (bicipital groove) runs immediately medial to the crest, separating the greater and lesser tubercles. As the sequence advances, subtle changes in lighting and angle help distinguish the crest from the adjacent surgical neck inferiorly and the articular surface superiorly. Bony relief reads cleanly. That ridge matters because it frames tendon and bursal anatomy that drives much of shoulder pain. The pectoralis major inserts on the lateral lip of the intertubercular sulcus, contiguous with the crest region, and this relationship helps explain tendon avulsion patterns and enthesopathy at the proximal humerus. Motion in the animation clarifies the three-dimensional boundary between the bicipital groove and the greater tubercle, a distinction that can be confusing on plain radiographs and in early gross anatomy labs. Small landmark. Big implications. Use it for upper limb osteology teaching, rotator cuff and proximal humerus attachment overview in MSK anatomy courses, or as a figure base for publisher plates on shoulder approaches that reference the bicipital groove and proximal humeral ridges. Orthopedic and radiology teams can also pair it with discussions of proximal humerus fractures at the surgical neck and tuberosity involvement, where fragment displacement changes tendon tension vectors. Anatomical accuracy verified by SciePro's Medical Advisory Board.