Medial Epicondyle Of The Humerus

Description

Medial epicondyle of the humerus dominates the medial aspect of the distal arm in this illustration, projecting inferior to the medial supracondylar ridge and just proximal to the ulnohumeral articular region. Along its anterior and inferior surface, the common flexor origin occupies a broad attachment area for flexor carpi radialis, palmaris longus, flexor carpi ulnaris (humeral head), and flexor digitorum superficialis, while the pronator teres arises anteromedially. Posterior to the epicondyle, the sulcus for the ulnar nerve is identifiable between the epicondyle and olecranon, placing the nerve’s course in immediate proximity to the bony prominence. This is a palpable landmark. Clinical relevance centers on traction and compression at the medial elbow: valgus stress loads the ulnar collateral ligament complex (anterior bundle) near the medial epicondyle, and repetitive throwing can produce medial epicondyle apophysitis in adolescents or UCL insufficiency in adult overhead athletes. Local tenderness over the common flexor tendon origin supports medial epicondylitis (golfer’s elbow), while paresthesias in the ulnar distribution point to cubital tunnel syndrome where the nerve lies in the retroepicondylar groove. The fixed viewpoint emphasizes cortical contours and attachment footprints, making it easier to teach where tendon pain localizes versus where neuropathic symptoms originate. Orthopedic and sports medicine texts can pair this illustration with sections on valgus instability, flexor-pronator mass strain, and ulnar nerve entrapment, and it also suits anatomy lab manuals when students learn to orient the distal humerus and identify the medial epicondyle by palpation. Preoperative patient education materials for ulnar nerve decompression or transposition benefit from the direct bony landmark emphasis in a single frame. Anatomical accuracy verified by SciePro's Medical Advisory Board.