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Posterior Interosseous Nerve
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| Posterior Interosseous Nerve | |
|---|---|
| Synonym | Dorsal interosseous nerve |
| Nerve Type | Motor nerve |
| Origin | Continuation of the deep branch of the radial nerve after it spirals around the radial head and penetrates the supinator muscle, carrying C7 and C8 fibres. |
| Course | It runs under the arcade of Frosche |
| Motor innervation | Extensor muscles of the forearm, sensory fibres to the dorsal aspect of the carpus. |
