Common Digital Nerves in Second, Third and Fourth Webs Anatomy

The digital nerves are derived from the common digital nerves of the median and ulnar nerves.
The radial common digital nerve of the median nerve branches to the digital nerves of the thumb and radial side of the index.
The 2^nd common digital nerve from the median nerve branches into the ulnar digital nerve of the index and radial digital nerve of the long.
The 3^rd common digital nerve of the median nerve branches into the ulnar digital nerve of the long and radial digital nerve of the ring.
The common digital nerve of the 4-5 web from the ulnar nerve branches into the ulnar digital nerve of the ring and radial digital nerve of the little, while the ulnar nerve provides the ulnar digital nerve of the little.
The digital nerves supply sensation to the skin via the free nerve endings, the Pacinian corpuscles, and the Meissner’s corpuscles.

Diagrams & Photos

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 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).