Fig. 11

Sonoanatomy of the superficial radial nerve. Short-axis views of the superficial radial nerve from its origin from the radial nerve trunk to the distal radial wrist. A The origin of the superficial radial nerve from the radial nerve at the anterior lateral elbow appearing as a hypoechoic monofascicular structure. B The nerve distal to the elbow running deep to the brachioradialis. C At the distal third of the forearm, the nerve still runs deep to the brachioradialis together with the radial artery. D The termination of the superficial radial nerve at the distal radial wrist running superficial to the first extensor compartment