Peroneus Tertius

Deep Peroneal Nerve, Common Peroneal Nerve, Sciatic Nerve, Posterior Division Sacral Plexus, L5, SI. 

From the anterior surface of the lower one-third of the fibula. 

Into the base of the fifth metatarsal head, anterior surface. 

One handbreadth above bimalleolar line (MM-LM) of the ankle and two fmgerbreadths lateral to the tibia. 

If the electrode is inserted too medially it will be in the extensor hal-lucis longus if inserted too proximally it will be in the tibialis anterior or the extensor digitorum longus. 

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The major muscle of ankle dorsiflexion is the tibialis anterior, assisted by the extensor digitorum longus, the extensor hallucis longus, and the peroneus tertius. The major muscles of ankle plantar flexion are the gastrocnemius and soleus, assisted by the plantaris, tibialis... 

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