Posterior Surface Of The Humerus In Rear View

Description

Posterior humeral anatomy dominates this rear-view illustration, with the shaft extending superiorly toward the head and inferiorly widening into the distal humerus. Along the posterior diaphysis, the lateral and medial borders frame the broad cortical surface, and the spiral (radial) groove is implied as an oblique depression crossing from medial to lateral in the mid-shaft region. Distally, the posterior aspect transitions to the triangular olecranon fossa superior to the trochlea, flanked by the medial and lateral supracondylar ridges that continue proximally from the epicondyles. Triceps brachii attachment areas are legible along the posterior shaft and distal humerus. Orientation is unequivocal. Posterior humeral surface landmarks matter whenever you need to relate a fracture line or surgical interval to neurovascular risk, because the radial nerve and profunda brachii artery track in the spiral groove and become vulnerable in mid-shaft fractures or when applying plates along the posterior or posterolateral cortex. The fixed rear perspective supports teaching of triceps-splitting and triceps-sparing posterior approaches to the distal humerus, where the olecranon fossa, epicondylar region, and supracondylar ridges define exposure limits and hardware corridors. Bony contour is emphasized over soft tissue, which helps when correlating to plain radiographs or CT bone windows. Use this illustration in upper limb anatomy courses to reinforce posterior humeral landmarks, in orthopaedic trauma manuals to annotate Holstein-Lewis type fracture patterns and radial nerve considerations, or in preoperative planning materials for distal humerus ORIF where posterior column orientation and the olecranon fossa provide reliable intraoperative reference points. Anatomical accuracy verified by SciePro's Medical Advisory Board.