Esostosi della testa fibulare e compressione
del nervo peroneale: descrizione di un caso
in un adolescente

The peroneal nerve is frequently involved in cases of lesions or entrapment in the lower limb. In literature, only few cases have been reported on peroneal nerve compression by a benign bone growth, such as exostosis. We report the case of a 13 year old adolescent boy, who presented incomplete left peroneal nerve palsy with first toe extension deficit and paresthesia by exostosis arising from capitulum fibulae. Exclusive neurological symptoms are atypical for exostosis, which usually induces painless cosmetic deformity. The neurophysiological study immediately excluded demyelinating neuropathy, therefore, because of the patient’s age, we concluded for a compression-form. The imaging techniques confirmed the presence of exostosis. Therefore, the patient underwent surgical removal of the exostosis.