Peroneal neuropathy

Historical note and nomenclature
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By Mamatha Pasnoor MD

Peroneal neuropathy is also known as or subsumes Lateral popliteal mononeuropathy, Lateral popliteal nerve injury, and Peroneal nerve palsy. -ed

The most common entrapment neuropathy in the lower extremity is common peroneal mononeuropathy at the fibular head. This syndrome can occur in both adults and children and also, rarely, in the neonate. Almost all patients presenting with common peroneal neuropathy will present with foot drop. Although the most common site of nerve entrapment is the fibular head, other sites within the calf, ankle, and foot may result in a portion of a common peroneal neuropathy syndrome.

Key Points

  • Peroneal mononeuropathy is the most common entrapment neuropathy in the lower extremity.
  • Peroneal mononeuropathy presents with foot drop, sensory loss on dorsum of foot and lateral leg, and, rarely, pain.
  • The most common etiology is external compression and trauma.
  • Electrodiagnostic studies are useful for localization and assess the severity of peroneal neuropathy. High-resolution sonography also helps with assessment of peroneal neuropathy.

In This Article

Historical note and nomenclature
Clinical manifestations
Clinical vignette
Pathogenesis and pathophysiology
Differential diagnosis
Diagnostic workup
Prognosis and complications
References cited