An Anterior View Of Anatomical Neck Of The Humerus

Description

Rotating through an anterior perspective, the proximal humerus is centered on the articular head and the anatomical neck, the shallow circumferential groove immediately distal to the hyaline-covered surface that faces medially, superiorly, and slightly posteriorly toward the glenoid cavity. As the sequence turns, the greater tubercle remains lateral while the lesser tubercle comes forward, separated by the intertubercular sulcus (bicipital groove) on the anterior surface. Inferior to the anatomical neck, the surgical neck region broadens into the proximal shaft. Orientation stays fixed to anatomical position. For teaching and clinical anatomy, the anatomical neck marks the margin of the humeral head and the attachment line for the glenohumeral joint capsule, while the surgical neck just distal to it is the common fracture site associated with axillary nerve injury and posterior circumflex humeral artery compromise. Motion helps clarify a frequent learner error: confusing the anatomical neck with the surgical neck when reading radiographs or when planning the safe zone for proximal humeral hardware. Seeing the head-tubercle relationship change with rotation makes the bicipital groove and tubercles easier to localize for tendon and capsular landmarks. Use this animation in upper limb anatomy modules, orthopedic and sports medicine teaching on proximal humerus fractures and glenohumeral instability, and as a visual reference in surgical education for deltopectoral approaches and implant positioning relative to the humeral head. Useful in textbooks, e-learning, and patient education discussing shoulder fractures or rotator cuff related landmarks. Anatomical accuracy verified by SciePro's Medical Advisory Board.