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The brachioradialis muscle is located in the forearm. It enables flexion of the elbow joint. The muscle also assists with pronation and supination of the forearm. These two movements allow the forearm and hand to turn so that the palm faces up or down. The arms are the only part of the body with this ability. The muscle originates on the lateral supracondylar ridge of the humerus. This rough margin is located on the lower end of the humerus. From there, the brachioradialis travels the length of the forearm. It inserts into the distal radius, at the bony projection known as the radial styloid process. For oxygenated blood, the brachioradialis muscle relies on the services of the radial recurrent artery. This artery branches off of the radial artery just below the elbow. The radial nerve innervates the muscle. The muscle shares this nerve with the triceps, anconeus, and extensis carpi radialis longus muscles.

Written and medically reviewed by the Healthline Editorial Team
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In Depth: Brachioradialis

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