The flexor carpi radialis muscle is an extrinsic muscle of the hand found on the anterior forearm. It arises from the medial epicondyle at the elbow to insert on the second metacarpal bone, on the anterior base. It serves to flex the wrist (move it toward the anterior forearm). Generally, a flexor muscle is one that decreases the angle between two bones, as in bending the arm at the elbow; raising Continue Scrolling To Read More Below...