Nervus Radialis is a nerve that runs down the back of the arm, branching out to provide sensation and motor function to the muscles of the forearm, hand, and fingers. There are several synonyms for the Nervus Radialis, including the radial nerve, the musculospiral nerve, and the posterior interosseous nerve. The radial nerve is responsible for both motor and sensory functions in the arm and hands, making it an essential part of our nervous system. Understanding the different synonyms for the Nervus Radialis can help medical professionals quickly diagnose and treat injuries and conditions affecting this important nerve.