Radial and Ulnar Digital Nerves Index, Long, Ring and Little
- The digital nerves are branches of the common digital nerves which originate from the median and ulnar nerves.
- The digital nerves supply sensation to the skin via the free nerve endings, the Pacinian corpuscles, and the Meissner’s corpuscles.
Diagrams & Photos
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The diagram shows the radial digital nerves, the ulnar digital nerves, and the common digital nerves originating from the median and ulnar nerves. -
Nerve with axons enclosed in endoneurium (1); Fascicle enclosed in perineurium (2); Fascicular groups enclosed in connective tissue called internal epineurium (3); Internal epineurium (4); External epineurium (5); Epineural blood vessels (6).
Key Points
- The digital nerves are held in place by the Grayson’s and Cleland’s retention ligaments.
- The digital nerves lie palmar (superficial) to the arteries in the finger and dorsal (deep) to the common digital arteries in the palm.
- The common digital nerves are dorsal to the superficial intermetacarpal ligaments (Skoog's ligaments).