radial nerve
anatomy
Quick Summary
The radial nerve is a major nerve of the upper extremity that originates from the brachial plexus. It innervates muscles responsible for extending the wrist and digits, as well as one abductor of the hand. The radial nerve also provides sensory information from a portion of the hand. This nerve, along with the median and ulnar nerves, traverses the forearm, which is the region between the elbow and the wrist containing the radius and ulna bones.12
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