Anatom3DDeep branch of radial nerve
Ramus profundus nervi radialis · Hluboká větev vřetenního nervu
Nervous system
Looks like
The motor branch of the radial nerve that dives through the supinator muscle at the elbow.
What it does
Moves the muscles that straighten the wrist, fingers and thumb and turn the palm up.
Keeping it well
Can be trapped at the supinator (radial tunnel), causing weak finger straightening without numbness.