What Muscle Pulls The Radius During Elbow Flexion?

What Muscle Pulls The Radius During Elbow Flexion? The muscles are: brachialis, which attaches to your humerus and your ulna. brachioradialis, which attaches to your humerus and your radius. Which muscle pulls on the radius? The tendon that attaches the biceps muscle to the forearm bones (radius and ulna) is called the distal biceps tendon.