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. 2021 May 7;100(18):e25812. doi: 10.1097/MD.0000000000025812

Figure 1.

Figure 1

Ultrasonography at the predetermined sites for cross-sectional area in the median and ulnar nerve. Median nerve at the wrist (A), forearm (B), below-elbow (C), antecubital fossa (D), mid-arm (E), and axilla (F). Ulnar nerve at the wrist (G), arterial split (H), outlet of the cubital tunnel (I), tip of the medial epicondyle (J), 2 cm proximal to the tip of the medial epicondyle (K), mid-arm (L), and axilla (M). BA = brachial artery, BB = biceps brachii, Br = brachialis, FCU = flexor carpi ulnaris, FDS = flexor digitorum superficialis, FDP = flexor digitorum profunuds, ME = medial epicondyle, P = pisiform bone, PT = pronator teres, TR = triceps, UA = ulnar artery.