Skip to main content

Unfortunately we don't fully support your browser. If you have the option to, please upgrade to a newer version or use Mozilla Firefox, Microsoft Edge, Google Chrome, or Safari 14 or newer. If you are unable to, and need support, please send us your feedback.

Publish with us
Palmar Branch of Ulnar Nerve
Nervous System

Palmar Branch of Ulnar Nerve

Ramus palmaris nervi ulnaris

Read more


The palmar branch of ulnar nerve arises from the main trunk of the nerve proximal to the flexor retinaculum. It contains nerve fibers which relay sensory information to the C8, T1 cervical and thoracic segments of the spinal cord.


Following its origin from the ulnar nerve in the forearm, the palmar cutaneous branch descends along with the main nerve trunk. It crosses over the flexor retinaculum to reach the skin over the hypothenar eminence (medial palmar region) (Engber and Gmeiner, 1980).


There are no named branches.

Supplied Structures

The palmar branch of the ulnar nerve provides cutaneous innervation to the medial palm (over the hypothenar eminence).


Engber, W. D. and Gmeiner, J. G. (1980) 'Palmar cutaneous branch of the ulnar nerve', J Hand Surg Am, 5(1), pp. 26-9.

Learn more about this topic from other Elsevier products

Ulnar Nerve

ScienceDirect image

The ulnar nerve (and accompanying artery) pass deep to the volar ligament before branching into the deep and superficial branches.

Explore on ScienceDirect(opens in new tab/window)

Complete Anatomy

The world's most advanced 3D anatomy platform

Complete Anatomy