Ulnar and Radial Shaft Fractures By Danielle Campagne, MD, University of California, San Francisco Reviewed / Revised Dec 2022 View Patient Education Symptoms and Signs Diagnosis Treatment Key Points Topic Resources Monteggia Fracture Dislocation... Monteggia Fracture Dislocation... Galeazzi Fracture Ulnar and radial shaft fractures frequently result from direct trauma to the radius or ulna.