A case of bilateral high division of sciatic nerve with a variant inferior gluteal nerve

High division of the sciatic nerve was found bilaterally in a 70 year old male cadaver. Common peroneal nerve was found piercing the piriformis muscle dividing the muscle into upper and lower slips. Tibial nerve was found emerging below the lower slip of the piriformis muscle. Inferior gluteal nerve was formed by two roots one above and one below the lower slip of the piriformis muscle. Here in this case report we discuss the possible sciatic nerve entrapment due to this kind of variations and we also discuss the two conditions named sciatica and the piriformis syndrome. Neuroanatomy; 2006; 5: 33–34.