Deep Peroneal Nerve, Lateral View

Description

Running along the lateral compartment of the leg, the common fibular (peroneal) nerve is seen dividing near the fibular neck into the superficial fibular nerve and the deep fibular (deep peroneal) nerve. From this lateral perspective, the deep fibular nerve tracks anteriorly to the fibula and then descends in close company with the anterior tibial vessels along the interosseous membrane, deep to tibialis anterior and extensor digitorum longus. Distally it approaches the ankle joint and dorsal foot, where its terminal branches course toward the first web space between the hallux and second toe. Orientation is clean. Bones of the femur, tibia, fibula, and the tarsals provide fixed landmarks for the nerve’s path. This angle matters because it clarifies the relationship between the deep fibular nerve and the fibular head, a site where traction or compression can follow knee dislocation, fibular neck fracture, or tight plaster casting, producing foot drop from weakness of ankle dorsiflexion. The descending course adjacent to the interosseous membrane also helps explain why anterior compartment syndrome can compromise deep fibular nerve function and cause sensory loss in the dorsal first web space. For surgical planning, the depiction supports safe dissection planes for anterior approaches to the tibia and ankle, where the nerve runs with the anterior tibial artery and can be injured if the neurovascular bundle is not identified early. Educators can drop this into lower-limb anatomy teaching to connect compartment boundaries, neurovascular bundles, and surface landmarks around the fibular head and anterior ankle. Clinicians and authors will find it suitable for orthopedic trauma content on common fibular neuropathy, compartment syndrome, and operative approaches that place the deep fibular nerve at risk. Anatomical accuracy verified by SciePro's Medical Advisory Board.