Peroneal Nerve Palsy

synonyms:

Peroneal Nerve Palsy ICD-9

Peroneal Nerve Palsy Etiology / Epidemiology / Natural History

Peroneal Nerve Palsy Anatomy

• Peroneal nerve innervates: extensor hallucis longus, extensor digitorum brevis, tibialis anterior, peroneus longus.
• Extensor hallucis longus is innervated most distally and recovers last after peroneal nerve palsy.
• Lies superficial to the lateral head of the gasctrocnemius.
• Mean distance from posterolateral corner fo the tibia = 1.49cm.

Peroneal Nerve Palsy Clinical Evaluation

• Test tibialis posterior function with resistance to plantar flexion and inversion. Weakness indicates that lesion is likely from L5 radiculopathy instead of peroneal nerve palsy. Tibialis posterior is innervated by the tibial nerve.

Peroneal Nerve Palsy Xray / Diagnositc Tests

• EMG/NCV.

Peroneal Nerve Palsy Classification / Treatment

• After TKA : occurs primarily with correction of fixed valgus deformities with flexion contractures. Initial treatment = release of compressive dressings and knee flexion.

Peroneal Nerve Palsy Associated Injuries / Differential Diagnosis

• HNPP
• L5 Radiculopathy

Peroneal Nerve Palsy Complications

Peroneal Nerve Palsy Follow-up Care

• Extensor hallucis longus is innervated most distally and recovers last after peroneal nerve palsy.

Peroneal Nerve Palsy Review References

• Rosson GD, CORR 2005 Sep;438:248)
• Hems TE, Injury. 2005 May;36(5):651
• Garozzo D, J Neurosurg Sci. 2004 Sep;48(3):105
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