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Anterior interosseous nerve
From Wikipedia, the free encyclopedia
| Nerve: Anterior interosseous nerve | ||
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| Deep palmar nerves. (Volar interosseous labeled at center top.) | ||
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| Nerves of the left upper extremity. (Volar interosseus labeled at center right.) | ||
| Latin | nervus interosseus antebrachii anterior | |
| Gray's | subject #210 938 | |
| From | Median nerve | |
| Dorlands/Elsevier | n_05/12565977 | |
The anterior interosseous nerve (volar interosseous nerve) is a branch of the median nerve that supplies the deep muscles on the front of the forearm, except the ulnar half of the flexor digitorum profundus.
It accompanies the anterior interosseous artery along the front of the interosseous membrane of the forearm, in the interval between the flexor pollicis longus and flexor digitorum profundus, supplying the whole of the former and the radial half of the latter, and ending below in the pronator quadratus and wrist joint.
Many texts, for simplicity's sake, consider this nerve part of the median nerve.
The anterior interosseous nerve innervates 2.5 muscles:
- flexor pollicis longus
- pronator quadratus
- the radial (lateral) half of flexor digitorum profundus
These muscles are in the deep level of the anterior compartment of the forearm.
- Duke Orthopedics anterior_interosseous_branch_of_median_nerve
- anterior+interosseous+nerve at eMedicine Dictionary
- EatonHand ner-071
- -2006253539 at GPnotebook - "anterior interosseous nerve palsy"
- Image (see yellow arrow under "Findings")
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
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| Supraclavicular | dorsal scapular • suprascapular • to the subclavius • long thoracic |
| Infraclavicular: lateral cord | musculocutaneous (lateral cutaneous of forearm) • lateral pectoral • lateral head of median (anterior interosseous, palmar, common palmar digital, proper palmar digital) |
| Infraclavicular: medial cord | medial pectoral • medial cutaneous of forearm • medial cutaneous of arm • ulnar (muscular branches, dorsal branch, palmar branch, superficial branch, deep branch) • medial head of median |
| Infraclavicular: posterior cord | subscapular (upper, lower) • thoracodorsal • axillary (superior lateral cutaneous of arm) • radial (muscular, inferior lateral cutaneous of arm, posterior cutaneous of arm, posterior cutaneous of forearm, superficial branch, deep branch, posterior interosseous) |
| Other | cutaneous innervation of the upper limbs |