Dorsal cutaneous branch of the ulnar nerve

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The dorsal cutaneous branch of the ulnar nerve is a branch of the ulnar nerve.

Dorsal cutaneous branch of the ulnar nerve

System:
Function:
Origin: Ulnar nerve
Branches:
Insertion:
Arterial supply:
Venous drainage:
Lymphatic drainage:
Innervation: Medial skin of the dorsal surface of the hand and medial one and a half digits
Vertebral levels:
Search for Dorsal cutaneous branch of the ulnar nerve in Gray's.

Anatomical Course

The nerve arises from the the ulnar nerve in the distal forearm. It passes deep to flexor carpi ulnaris onto the medial aspect of the dorsum of the hand, where it terminates as dorsal digital nerves, supplying the dorsal surfaces of the little finger and medial ring finger.

Sensory Supply

  • Skin of the medial surface of the dorsum of the hand
  • The sixth dorsal digital nerve supplies skin of the dorsum of the medial aspect of the ring finger
  • The seventh dorsal digital nerve supplies skin of the dorsum of the lateral aspect of the little finger
  • The eighth dorsal digital nerve supplies skin of the dorsum of the medial aspect of the little finger

See Also