Lateral Epicondyle On The Humerus, Anterior View

Description

Lateral epicondyle of the humerus anchors the lateral side of the distal brachium in this anterior-oriented illustration, with the bony prominence positioned lateral to the distal humeral articular block and just proximal to the level of the elbow joint line. The epicondyle’s anterior surface and superior border read as a roughened, nonarticular area, while the adjacent distal humerus transitions medially toward the trochlear region and laterally toward the capitular contour. Along the anterolateral margin, the epicondyle stands out as a palpable landmark for the radiocapitellar compartment, lying proximal to the expected position of the radial head and neck. Bone detail is the emphasis. For clinicians, the lateral epicondyle is the reference point for the common extensor origin, and its relationship to the radiocapitellar joint helps explain why pain from lateral epicondylitis (tennis elbow) can localize just anterior and distal to the epicondylar apex, then radiate down the extensor mass of the forearm. The same bony projection also frames the attachment footprint of the lateral collateral ligament complex, including the radial collateral ligament and the lateral ulnar collateral ligament, structures assessed when posterolateral rotatory instability is suspected after elbow trauma. An anterior perspective is useful when teaching palpation, injection landmarks, and the bony geography encountered in anterolateral approaches to the elbow, where the radial nerve divides into superficial and deep branches near the level of the radiocapitellar joint. Orthopaedic and sports medicine texts can pair this illustration with discussions of extensor tendinopathy, ligamentous instability, and differential diagnosis of lateral elbow pain, including radial tunnel syndrome. Anatomy faculty will also find it well-suited for upper-limb osteology labs and exam plates focused on distal humeral landmarks and attachment sites. Anatomical accuracy verified by SciePro's Medical Advisory Board.