Ulna Viewed From A Medial Side

Description

Medial exposure of the ulna emphasizes the proximal olecranon process and the trochlear notch, the concave articular surface that cups the humeral trochlea to form the ulnohumeral component of the elbow. Just distal to the notch, the coronoid process projects anteriorly, while the ulnar tuberosity lies inferior to it as the primary insertion site for brachialis. Along the diaphysis, the interosseous border runs laterally toward the distal ulna, terminating at the ulnar head and the styloid process, which sits posteromedial to the ulnar head at the wrist. Orientation is clear. Proximal is superior, distal inferior. A medial view is the one most educators reach for when explaining why the elbow functions as a stable hinge and why small changes in ulnar morphology matter for motion and load transfer. Posteromedially, the ulnar nerve courses in the cubital tunnel behind the medial epicondyle adjacent to the olecranon, a relationship that frames the clinical anatomy of cubital tunnel syndrome and the surgical landmarks used during ulnar nerve decompression or transposition. Distally, the contour of the ulnar head and styloid relates to the distal radioulnar joint and triangular fibrocartilage complex attachments, so this angle also supports teaching ulnar-sided wrist pain and instability patterns after falls. Orthopaedic anatomy courses and upper limb modules in medical school will find this a clean reference for surface mapping of the olecranon, trochlear notch, and distal ulnar landmarks. It also fits radiology and operative manuals that discuss elbow fracture patterns (olecranon, coronoid) and wrist evaluation at the distal radioulnar joint in terms of bony constraints. Anatomical accuracy verified by SciePro's Medical Advisory Board.