3D ANATOMY - Left shoulder, deep dissection of the joint, musculature, nerves and vessels

This 3D printed anatomical model presents a detailed deep dissection of the left shoulder, including the scapula, proximal humerus (up to midshaft), and surrounding muscles, nerves, and vessels. It offers a comprehensive view of the glenohumeral joint and associated neurovascular structures, ideal for teaching and clinical reference.
Muscular Structures and Tendon Anatomy
Anteriorly, the deltoid muscle has been removed from its origin to reveal deeper layers. Its insertion remains intact, overlying the long head of the biceps brachii, which travels through the bicipital groove toward the shoulder joint capsule.
The subscapularis, a multipennate muscle, is fully exposed, including its tendinous insertion beneath the short head of the biceps brachii. Posteriorly, both the supraspinatus and infraspinatus muscles are visible from their scapular origins to their insertions on the proximal humerus.
Nerve and Vascular Anatomy
Key neurovascular structures are clearly depicted:
– The suprascapular nerve and artery pass beneath and above the superior transverse scapular ligament, respectively.
– A major neurovascular bundle—containing the brachial artery, brachial vein, and terminal branches of the brachial plexus (radial, ulnar, median, and medial antebrachial cutaneous nerves)—runs adjacent to the short head of the biceps.
– The axillary nerve is shown entering the quadrangular space, while the profunda brachii artery originates nearby, following the radial nerve.
Additional Muscle and Ligament Features
The tendons of latissimus dorsi, teres major, and long head of triceps brachii have been transected to improve visibility of the medial humerus and deeper neurovascular pathways.
The glenohumeral joint capsule remains intact, with all major extracapsular ligaments preserved, including:
– Acromioclavicular ligament
– Coracoacromial ligament
– Coracoclavicular ligament (both conoid and trapezoid parts)