The |brachioradialis| originates two-thirds of the way down the |humerus| (upper arm bone) between the triceps and the |brachialis|. The muscle begins wide and flat and twists toward the front of the arm as it descends. It then widens and flattens again before ending in a flat ~tendon~, which inserts on the thumb side of the |radius|. Unlike most of the long ~tendons~ of the forearm, the ~tendon~ does not cross the wrist joint, but rather ends at the distal end of the |radius|. This muscle bends the forearm at the elbow. It does not assist in turning the forearm.
