Table of Contents
Overview
The posterior muscles of the forearm are divided into a superficial and deep layer. The superficial layer is a group of 6 muscles, containing the brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor carpi ulnaris and extensor digiti minimi. The deep layer is a group of 5 muscles, that includes the supinator, abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus and extensor indicis.
Keypoints
| Superficial layer | Brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor carpi ulnaris and extensor digiti minimi |
| Deep layer | Supinator, abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus and extensor indicis |
| Innervation | Radial nerve (C5-C8) |
| Functions | Mainly extension of hand and digits |
Atlas of Posterior compartment of the forearm
Brachioradialis muscle (Musculus brachioradialis)
posterior view
Extensor carpi radialis longus muscle (Musculus extensor carpi radialis longus)
posterior view
Extensor carpi radialis brevis muscle (Musculus extensor carpi radialis brevis)
posterior view
Extensor digitorum muscle (Musculus extensor digitorum)
posterior view
Extensor carpi ulnaris muscle (Musculus extensor carpi ulnaris)
posterior view
Extensor digiti minimi muscle (Musculus extensor digiti minimi)
posterior view
Supinator muscle (Musculus supinator)
posterior view
Abductor pollicis longus muscle (Musculus abductor pollicis longus)
posterior view
Extensor pollicis brevis muscle (Musculus extensor pollicis brevis)
posterior view
Extensor pollicis longus muscle (Musculus extensor pollicis longus)
posterior view
Extensor indicis muscle (Musculus extensor indicis)
posterior view
Reference
- https://kenhub.com
