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Superficial Fibular Nerve (Full)

nervus fibularis superficialis

The superficial fibular nerve supplies the peroneal muscles and the dorsal foot sensation. Its fascial exit point in the lower lateral leg is a compression point — eversion sprains can stretch the nerve at its fascial exit, producing the burning dorsal foot paraesthesia of lateral compartment syndrome or SFN entrapment at the fasciotomy site. The nerve is at risk during lateral compartment fasciotomy for acute compartment syndrome.

Region: Lower Leg

Anatomical Data

Origin, Insertion & Supply

Origin	Common fibular nerve at the fibular neck

Clinical Relevance

Clinical Notes

The SFN fascial exit point 4-6 cm above the lateral malleolus must be released during lateral compartment fasciotomy — failure to release the fascia at this point leaves the nerve compressed after compartment decompression. The SFN is visible as a distinct cord at this fascial exit during ankle arthroscopy portal placement — the anterolateral portal must be placed medial to the SFN.

Pathology

Common Injuries & Conditions

SFN Entrapment at Fascial Exit

Superficial fibular nerve compression at its crural fascia exit producing dorsal foot burning managed with fascial release or decompression.