Bones of the Shoulder, Posterior View

Description

Posterior anatomy of the male shoulder girdle is rendered with the scapula dominating the field, its spine running transversely to the acromion and dividing the supraspinous and infraspinous fossae across the dorsal surface. Lateral to the scapular body, the glenoid cavity articulates with the proximal humerus, with the greater tubercle positioned laterally and the surgical neck lying inferior to the humeral head. Superiorly, the clavicle spans medially toward the sternum and laterally toward the acromioclavicular joint, while a dense vascular overlay traces regional arteries (red) and veins (blue) across the posterior shoulder and proximal arm. Surface landmarks in this view guide both teaching and procedures: the scapular spine and acromion orient palpation and incisions, and the relationship of the glenohumeral joint to the posterior deltoid frames a posterior approach to shoulder arthroscopy. Nerve and vessel corridors matter here. The posterior circumflex humeral artery and accompanying veins course with the axillary nerve through the quadrangular space adjacent to the surgical neck, a pattern clinicians keep in mind when evaluating proximal humeral fractures or posterior shoulder dislocations. The scapular arterial anastomoses (including contributions from the suprascapular and circumflex scapular systems) also help explain collateral flow when proximal subclavian or axillary segments are compromised. Use this artwork for gross anatomy labs, orthopedic and sports medicine lectures on shoulder instability, and surgical education materials discussing portals, safe zones, and the posterior deltoid split. It also fits vascular teaching content on upper limb arterial supply and venous return where students benefit from seeing the scapula and humerus as fixed bony references for vessel pathways. Anatomical accuracy verified by SciePro's Medical Advisory Board.