injuries poisoning
Ulnar and Radial Shaft Fractures
Introduction
Ulnar and radial shaft fractures frequently result from direct trauma to the radius or ulna. Concomitant dislocations are possible. (See also Overview of Fractures .) Fractures of the radius and ulna are frequently caused by direct blows to the forearm (eg, during contact sports, falls, or defensive actions during an assault). Concomitant dislocations can result from forces transmitted via the interosseous membrane between the radius and ulna. With proximal ulnar fractures, always look for an associated radial head dislocation. Isolated midshaft radius or midshaft ulna fractures are common. Monteggia fracturesare proximal ulnar fractures with a radial head dislocation. Galeazzi fracturesare distal radial shaft fractures with a dislocation of the distal radioulnar joint. 