Muscle Innervation & Cutaneous Distribution of Radial, Median and Ulnar Nerves |
Radial Nerve (B.E.A.S.T.) - Brachioradialis
- Extensors
- Anconeus, Abductor Pollicus Longus
- Supinator
- Triceps
| Figure 6 ![](https://lh6.googleusercontent.com/sciUz7stNcab9Zc9qYE2166Q2nOiYGHghGIrc2yobNQHCVnuYl6CJaAh_mHys7AT1WfvW-qLzGzeKiOXqiDhTWjPQoPQiVcAz1HrtEa19SAeffQf_7ycEkQrNptSwE5zvAby2CwDmooDYD4v) |
Median Nerve All of the anterior forearm muscles - Minus the Flexor Carpi Ulnaris (FCU) and the ulnar half of the Flexor Digitorum Profundus (FDP)
- Plus the three thenar muscles (Opponens Pollicis, Abductor Pollicis Brevis, Flexor Pollicis Brevis) and lumbricles 1 & 2 – to the index and middle fingers
| Figure 7 ![](https://lh5.googleusercontent.com/yT3YDpAIWRzAnzifWIp49oNCGHZGX4QNrMM2oCjfDv8bc5UCkVIIZDRM-D7Gy30GPUmVsUbA_kKw_7khHquScdPqPksKXRgIZy9LmzCn4ph6GYcCpsf14OvcGSt9rdFBJ3LTtpgL0vTtGYcT) |
Ulnar Nerve All of the intrinsic muscles of the hand - Minus the 3 thenar muscles and lumbricales 1-2
- Plus the Flexor Carpi Ulnaris (FCU) and the ulnar half of the Flexor Digitorum Profundus (FDP)
| Figure 8 ![](https://lh6.googleusercontent.com/YyMk-2bMAaJUMKAO4r9KNtOQ2CUI_p_e7TNL3wfLg5j8DRQ3c62wFPyfPKgZmgEnYwFh6PuJYNIxSmOBqNbqqLNgZx91CSsh38UvUGlct_3DLHFX6uIHWyU0sPDJFTs-69pTVuBT4tl76ald) |