Fig. 7
From: An overview of neuromuscular ultrasound of important small nerves
Sonoanatomy of the terminal branches of the ulnar nerve. Short-axis views of the terminal branches of the ulnar nerve from the level of Guyon’s canal to the palm. A Bifurcation of the ulnar nerve into deep and superficial ulnar nerves at the distal portion of Guyon’s canal just distal to the pisiform bone. B A level just distal to Guyon’s canal showing the deep ulnar nerve running deep while the superficial ulnar nerve running superficial and both are separated by the muscle belly of FDM. C Further distally, the two branches run away from each other. Note one of the branches of the ulnar artery running adjacent to the superficial sensory branch. D The termination of the superficial sensory ulnar nerve as palmar digital nerves running adjacent to the flexor tendons, accompanied by the digital artery