Superficial Branch of the Ulnar Nerve - Podcast Version TeachMeAnatomy 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x The superficial branch of the ulnar nerve is a mixed nerve of the hand. It supplies motor innervation to the palmaris brevis and sensation to the volar surface of the medial one and a half fingers. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Course The superficial branch of the ulnar nerve arises within Guyon’s canal at the distal border of the flexor retinaculum. It passes into the palm, travelling within the subcutaneous tissue of the hand and located medial to the ulnar artery. It provides a branch to the palmaris brevis muscle and then terminates by dividing into palmar digital nerves – which supply sensation to the volar surface of the medial one and half digits (little finger and medial half of the ring finger). By TeachMeSeries Ltd (2025) Fig 1Superficial branch of the ulnar nerve Motor Supply The superficial branch of the ulnar nerve provides motor innervation to the palmaris brevis muscle. Sensory Supply The superficial branch of the ulnar nerve provides sensory innervation to the volar surface of the medial one and half digits. It does this via two branches: Proper palmar digital nerve – supplies the volar surface of the medial half of the little finger. Common palmar digital nerve – divides into two palmar digital nerves, which supply the volar surfaces of the lateral half of the little finger and medial half of the ring finger. By TeachMeSeries Ltd (2025) Fig 2Cutaneous innervation of the sensory branches of the ulnar nerve Rate This Article