Figure 1.

Transverse ultrasound section of median and ulnar nerves (marked with white arrows) at different locations with anatomical landmarks. (a) MN distal forearm between FDS and FDP at the level of PQ proximal end. (b) UN distal arm next to medial head of TM and nearby BB muscle. (c) Image showing course of nerve with probe position (black box). BB, bicep brachii; FDP, forearm deep digital flexor; FDS, forearm superficial digital flexor; MN, median nerve; PQ, pronator quadratus; TM, tricep muscle; UN, ulnar nerve