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Peroneus Longus

Last updated on Sunday, June 21 2009 by blondarb

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Muscle Name: peroneus longus

AKA:  musculus peroneus longus

Abbreviation: PL

Spinal Nerve Roots:
    lumbosacral plexus

Named Nerves:
    superficial peroneal nerve

    common peroneal nerve

    sciatic nerve

Proximal Attachment: 

Distal Attachment: 

Action: Primarily eversion of the foot, with some weak dorsiflexion.

Needle Insertion: Approximately four centimeters distal to the fibular hear with the needle directed medially.

Activation for EMG:   Have the patient evert their foot.

Pitfalls: If the needle is inserted too laterally the soleus will be sampled, too medially and extensor digitorum longus will be sampled.


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