Palmar branch of ulnar nerve

The palmar branch of the ulnar nerve arises about five cm proximal to the wrist from where the ulnar nerve splits into palmar and dorsal branches. It supplies sensory innervation to a small area in the palmar surface of the wrist.

Palmar branch of ulnar nerve
Superficial palmar nerves. (Deep branch of ulnar and superficial branch of ulnar labeled at center right.)
Diagram of segmental distribution of the cutaneous nerves of the right upper extremity. (Ulnar palmar labeled at bottom left, in blue.)
Details
Fromulnar nerve
Tosuperficial branch, deep branch
Identifiers
Latinramus palmaris nervi ulnaris
TAA14.2.03.044
A14.2.03.036
FMA44878
Anatomical terms of neuroanatomy

The palmar branch represents the continuation of the ulnar nerve as it crosses the flexor retinaculum of the hand on the lateral side of the pisiform bone, medial to and a little behind the ulnar artery.

Some sources state that it ends by dividing into a superficial and a deep branch.[1] (Other sources state that the superficial branch of ulnar nerve and deep branch of ulnar nerve are the terminal branches of the ulnar nerve itself.)[2]

Additional Images
  • Palmar branch of ulnar nerve
  • Palmar branch of ulnar nerve
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References

This article incorporates text in the public domain from page 942 of the 20th edition of Gray's Anatomy (1918)

  1. The Anterior Divisions - Gray's Anatomy of the Human Body - Yahoo! Education Archived 2008-06-23 at the Wayback Machine
  2. Ellis, Harold; Susan Standring; Gray, Henry David (2005). Gray's anatomy: the anatomical basis of clinical practice. St. Louis, Mo: Elsevier Churchill Livingstone. p. 726. ISBN 0-443-07168-3.


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