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Posterior interosseous nerve | |
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Details | |
From | Deep branch of the radial nerve |
Innervates | |
Identifiers | |
Latin | nervus interosseus antebrachii posterior |
TA98 | A14.2.03.055 |
TA2 | 6437 |
FMA | 77559 |
Anatomical terms of neuroanatomy |
The posterior interosseous nerve (or dorsal interosseous nerve/deep radial nerve) is a nerve in the forearm. It is the continuation of the deep branch of the radial nerve, after this has crossed the supinator muscle. It is considerably diminished in size compared to the deep branch of the radial nerve. The nerve fibers originate from cervical segments C7 and C8 in the spinal column.