Figure 18. Normal ulnar nerve (forearm level) in the same volunteer as in Figure 16. Photograph (right) shows the area scanned. Transverse US scan of the right medial forearm at a level 5 cm below distal to the medial epicondyle shows an ovoid heterogeneously echoic ulnar nerve (arrows) with a reticular pattern, lying between the flexor carpi ulnaris (C) and the flexor digitorum profundus (D) muscles.