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The radial nerve innervates several muscles in the arm and forearm, including the triceps brachii, anconeus, brachioradialis, extensor carpi radialis longus, and extensor carpi radialis brevis. These muscles are primarily responsible for extending the elbow and wrist, as well as aiding in forearm supination. The radial nerve plays a crucial role in motor function and strength in the posterior compartment of the arm and forearm.

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1w ago

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