Normal and variant anatomy of the superficial fibular (peroneal) nerve

The superficial fibular (peroneal) nerve (in yellow) branches from the common fibular (peroneal) nerve at or below the proximal fibular head. The nerve descends in its "normal" course (A) in the lateral compartment adjacent the intermuscular septum (in blue) of the anterior and lateral compartments. Between 27 and 43 percent of patients have the superficial fibular (peroneal) nerve in either the anterior compartment (B) or both the anterior and the lateral compartments (C) of the leg. The superficial fibular (peroneal) nerve has also been found in close proximity to the septum that separates the anterior from the lateral compartment (D).