[TA] muscle of posterior (extensor) compartment of forearm; origin, lateral supracondylar ridge of humerus; insertion, anterior aspect of base of styloid process of radius; action, flexes elbow and assists in returning the pronated or supinated limb to the neutral position; nerve supply, (common) radial. SYN: musculus brachioradialis [TA], brachioradial muscle.
