Fractured Ulna, Anterior View

Description

Foreground emphasis falls on the ulna in anterior aspect, extending from the olecranon and coronoid process proximally to the ulnar head and styloid process distally. A segmental fracture interrupts the diaphysis in its middle third, leaving an intervening free fragment between proximal and distal main segments, with the fracture margins highlighted for clarity. Medial to the radius in anatomical position, the ulnar shaft presents its anterior border and subcutaneous contour while the interosseous border faces laterally toward the expected course of the interosseous membrane. Alignment matters here. Segmental ulnar shaft fractures concentrate clinical attention because they often reflect higher-energy loading than the classic isolated “nightstick” fracture and they destabilize the forearm ring across the interosseous membrane and distal radioulnar joint. When the ulna is fractured, the examiner must actively rule out a Monteggia pattern at the elbow (radial head dislocation relative to the capitulum) and assess DRUJ congruity distally, since malreduction can limit pronation and supination even when the fracture appears bridged. An anterior view helps correlate surface landmarks with plate placement along the subcutaneous border and highlights why rotational control of the intermediate segment can be difficult during open reduction and internal fixation. Orthopaedic teaching files, trauma conference slides, and exam prep for upper-limb radiographic interpretation benefit from this focused depiction of a segmental ulnar fracture. Surgical technique manuals and patient-education handouts can also pair it with AP and lateral forearm imaging to explain fixation strategy and expected complications such as delayed union in the diaphyseal blood-supply watershed. Anatomical accuracy verified by SciePro's Medical Advisory Board.