Osteocartilaginous exostoses or osteochondromas are the most common benign tumours affecting the bones. They are formed during the period of active growth and rarely lead to vascular or nervous complications. We report the case of a young 24 year old patient who received treatment for a swelling to the left calf, with pain and paraesthesia to the tibial nerve. X-rays showed a massive bony tumour to the upper third of the fibula. Angiography highlighted compression of the blood vessels of the legs, but without any disruption to blood flow. An electromyogram confirmed that the tibial nerve was affected. Excisional biopsy of the tumour allowed for the removal of the obstruction to the vasculo-nervous system. Histology confirmed the osteocartilaginous exostosis diagnosis. As a result, there was no longer any neurological impairment and no relapse has been observed.