Superficial Peroneal Nerve, Lateral View

Description

Running along the lateral aspect of the leg, the superficial fibular (peroneal) nerve is traced distal to the fibular neck after its origin from the common fibular nerve near the posterolateral knee. In lateral profile it courses inferiorly adjacent to the fibula and approaches the anterior intermuscular septum, where it transitions from a deep fascial plane between the fibularis (peroneus) longus and brevis and the extensor compartment toward a subcutaneous trajectory. Distally, the nerve continues anterior to the lateral malleolus region toward the dorsum of the foot, in proximity to the tarsals and metatarsals. Bony landmarks are clear. That relationship to the anterior intermuscular septum matters because this is a frequent site of entrapment and traction, producing pain or paresthesia over the anterolateral distal leg and dorsum of the foot with relative sparing of the first dorsal web space (deep fibular nerve territory). Surgeons planning a lateral approach to the distal fibula, ankle arthroscopy portals, or fasciotomy for chronic exertional compartment syndrome need a mental map of where the nerve pierces the crural fascia and becomes vulnerable. Nerve blocks and ultrasound-guided injections also target it where it is superficial. Use this lateral view when teaching lower-limb peripheral neuroanatomy in gross anatomy, physical therapy, or sports medicine modules, or when illustrating manuscripts on common fibular neuropathy versus superficial fibular entrapment in the setting of ankle inversion injuries. It also suits patient-facing materials explaining sensory loss patterns after fibular fracture or surgical fixation. Anatomical accuracy verified by SciePro's Medical Advisory Board.