What muscles are used when turning a doorknob?

The following muscles are used when turning a doorknob:

Extensor carpi radialis longus: helps extend the wrist and turn the hand.

Extensor carpi radialis brevis: helps extend the wrist and turn the hand.

Supinator: helps rotate the forearm and bend the elbow.

Pronator teres: helps rotate the forearm and bend the elbow.

Flexor carpi radialis: helps flex the wrist and turn the hand.

Flexor carpi ulnaris: helps flex the wrist and bend the elbow.