Male Triceps Muscle, Posterior View

Description

Prominent on the posterior arm, the triceps brachii forms the main muscular mass from the posterior axillary fold to the olecranon. The long head lies medially and proximally, arising from the infraglenoid tubercle of the scapula and descending between teres minor superiorly and teres major inferiorly, while the lateral head occupies the posterolateral humerus and the medial head sits deeper, becoming more apparent near the distal arm. All three heads converge into a broad tendon that inserts on the olecranon of the ulna, spanning the posterior aspect of the elbow joint. A clean posterior silhouette. Posterior anatomy of the triceps matters when you need to teach extension mechanics and when you need to operate. The radial nerve and profunda brachii artery course in the radial groove on the posterior humerus, so midshaft humeral fractures and posterior surgical approaches risk neuropraxia that often presents as wrist drop along with weakened elbow extension. Distally, the triceps tendon insertion and olecranon bursa relate directly to triceps tendinopathy, olecranon bursitis, and avulsion injuries that can mimic simple posterior elbow swelling after a fall. Use this artwork in upper limb anatomy courses to anchor the surface anatomy of the posterior arm and the layered arrangement of triceps heads, then pair it with cross-sectional or neurovascular plates when teaching the radial groove. It also fits well in orthopaedics or sports medicine materials covering humeral shaft fracture patterns, posterior elbow pain, and triceps tendon rupture repair planning. Anatomical accuracy verified by SciePro's Medical Advisory Board.