Radial nerve is a terminal branch of the posterior cord and supplies the majority of the muscles in the posterior compartment of the arm/forearm/hand. Arises from posterior cord of the brachial plexus (C5-8, T1) Spirals posterolaterally around the humerus with the deep brachial artery in the spiral groove. Gives off posterior cutaneous nerve of forearm, which passes posterior to lateral condyle and supplies posterior forearm It pierces the lateral intermsucular septum into the anterior...
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