Fig. 2From: Compare the clinical value of two minimally invasive approaches to locating radial nerve in the posterior humeral approacha Intraoperative image of the posterior upper arm shows the PACN and accompanying blood vessel. b Intraoperative image of the posterior upper arm demonstrates the PACN and lateral epicondyle. c Intraoperative image of the posterior upper arm shows the RN is identified by the PACNBack to article page