<prompt> Fracture shaft of humerus damages which nerve?Radial nerveMedian nerveAxillary nerveUlnar nerve  <response>: ANSWER: A Radial nerveREF: Snells anatomy 7th ed p. 484Radial nerve injury is seen in:Fracture shaft of humerusSaturday night palsyInjection palsyFeatures of radial nerve injury:Sensory loss over area supplied by posterior cutaneous nerve of forearm.Wrist, thumb and finger extension is lost. 