Compression of the peripheral nerves (PNs) induces intraneural lesions, which, once surgical decompression has been achieved, requires that the peripheral scar tissue be as non-adherent as possible. This allows optimal nerve tissue regeneration and the flexibility necessary for longitudinal movements of the PNs. In cases showing a risk for adherence, tissue interposition (with fat, muscle, fascia, etc.) can be proposed. The authors describe the use of a fascial flap of the fibular muscles used to protect the fibular nerve (FN) and the fibula head. This flap procedure was performed in a case of PN compression due to exostosis of the fibular nerve in a child.