page_title: Palmar branch of ulnar nerve
hierarchical_section_title: Palmar branch of ulnar nerve
caption_attribution_description: English: The cutaneous innervation of the right upper limb. Both areas supplied by the medial brachial cutaneous are colored green. The areas supplied by branches of the radial nerve are colored in pink.
context_page_description: 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.
  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.
context_section_description: 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.
  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. (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.)
caption: Diagram of segmental distribution of the cutaneous nerves of the right upper extremity. (Ulnar palmar labeled at bottom left, in blue.)
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