Muscle | Attachments | Innervation | Main Action(s) |
Brachioradialis Muscle | Lateral sufrace of distal radius | Radial | Flexes forearm |
Extensor Carpi Radialis Longus Muscle | Base of metacarpal bone 2 | Radial | Extends hand |
Extensor Carpi Radialis Brevis Muscle | Base of metacarpal bone 3 | Posterior Interosseous (Deep Radial) | Extends hand |
Extensor Digitorum Muscle | Extensor expansions of digits 2-5 | Posterior Interosseous (Deep Radial) | Extends hand |
Extensor Digiti Minimi Muscle | Extensor expansion of digit 5 | Posterior Interosseous (Deep Radial) | Extends digit 5 |
Extensor Carpi Ulnaris | Base of metacarpal bone 5 | Posterior Interosseous (Deep Radial) | Extends hand |
Abductor Pollicis Longus | Base of metacarpal bone 1 | Posterior Interosseous (Deep Radial) | Abducts digit 1 |
Extensor Pollicis Brevis | Base of proximal phalanx of digit 1 | Posterior Interosseous (Deep Radial) | Extends digit 1 |
Extensor Pollicis Longus | Base of distal phalanx of digit 1 | Posterior Interosseous (Deep Radial) | Extends digit 1 |
Extensor Indicis | Extensor expansion of digit 2 | Posterior Interosseous (Deep Radial) | Extends digit 2 |
Supinator | Lateral epicondyle of humerus, lateral surface of ulna, Proximal 1/3 of radius | Posterior Interosseous (Deep Radial) | Supinates hand |