Peroneal Nerve Palsy: Evaluation and Management

Peroneal nerve palsy is the most common entrapment neuropathy of
the lower extremity. Numerous etiologies have been identified;
however, compression remains the most common cause. Although
injury to the nerve may occur anywhere along its course from the sciatic
origin to the terminal branches in the foot and ankle, the most common
site of compressive pathology is at the level of the fibular head. The
most common presentation is acute complete or partial foot drop.
Associated numbness in the foot or leg may be present, as well.
Neurodiagnostic studies may be helpful for identifying the site of a
lesion and determining the appropriate treatment and prognosis.
Management varies based on the etiology or site of compression.
Many patients benefit from nonsurgical measures, including activity
modification, bracing, physical therapy, and medication. Surgical
decompression should be considered for refractory cases and those
with compressive masses, acute lacerations, or severe conduction
changes. Results of surgical decompression are typically favorable.
Tendon and nerve transfers can be used in the setting of failed
decompression or for patientswith a poor prognosis for nerve recovery.