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The deep fibular nerve arises from the common fibular nerve near the neck of the fibula.
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The deep fibular nerve travels in the anterior compartment of the leg on the anterior surface of the interosseous membrane (it travels with the anterior tibial artery).
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The deep fibular nerve provides motor innervation to the muscles of the anterior compartment of the leg (muscles that primarily dorsiflex the foot and extend the toes).
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The deep fibular nerve provides sensory innervation to the webspace between the hallux and second digit.
- Injury to the deep fibular nerve typically produces loss of dorsiflexion of the foot (footdrop), loss of extension of the toes, and sensory loss in the first webspace.
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