![]() On the dorsal surface of the distal radius, Lister's tubercle (dorsal tubercle) separates the 2 nd ( extensor carpi radialis brevis and extensor carpi radialis longus) and 3 rd ( extensor pollicis longus) extensor compartments. Your doctor may refer to it as a wrist fracture or broken wrist. Laterally, there is the radial styloid and medially the ulnar notch. A distal radius fracture is a break in the part of the bone closest to your wrist. ![]() The distal radial shaft flares out to form the distal radius with a facet for articulation with most of the proximal carpal row. It has a triangular cross section, with a lateral convexity, and a sharp medial (interosseous) border. What does this involve This involves fixing the broken parts of the distal radius bone back together using screws and a plate. Buckle fracture of the distal radius and ulna with minimal dorsal angulation. The radial shaft is thicker than the ulna and becomes thicker distally. Distal to the radial head is the neck of the radius and radial tuberosity - an oval prominence that is the site of attachment of the biceps brachii muscle. Buckle (or torus) fractures are most commonly seen in the distal radial. The proximal radius comprises the articular radial head and, immediately distally, the radial neck and tuberosity.
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