{Reference Type}: Journal Article
{Title}: The variations of osseous structure of the ınternal acoustic canal: an anatomical study.
{Author}: Sarı E;Nteli Chatzioglou G;Temirbekov D;Aliyeva A;Öztürk A;Gürses IA;
{Journal}: Braz J Otorhinolaryngol
{Volume}: 90
{Issue}: 3
{Year}: 2024 May-Jun 5
{Factor}: 2.474
{DOI}: 10.1016/j.bjorl.2024.101414
{Abstract}: <B>OBJECTIVE: </B>The internal acoustic meatus is an osseous canal that connects the inner ear to the posterior cranial fossa. It is located in the petrous portion of the temporal bone. A thin cribriform osseous plate known as the fundus is situated at the lateral end of the canal. This study assesses the structural and numerical variations of the fundus formations.<BR><B>METHODS: </B>Fifty-four temporal bones of unknown gender and age were examined with the surgical microscope.<BR><B>RESULTS: </B>The temporal bones analyzed were 46.2% right-sided and 53.7% left-sided. Only one temporal bone had two parallel transverse crests, while three had a single anterior crest that split into two branches posteriorly. The number of foramina at the transverse crest varied, with 29.6% having none, 48.1% having a single foramen, and 22.2% having several foramina. An anterior crest structure was seen in 53.7% of the temporal bones, with 5% having a slightly constricted entry to the facial canal. In cases with a single nerve foramen, 48.1% had one, while 51.8% had more than one, including examples with three or four foramina. A crest was found between the foramina of the single nerve in 7% of patients. Furthermore, a crest between the saccular nerve foramen and the high fiber foramina was seen in 25.9% of cases, and 5% had two saccular nerve foramina.<BR><B>CONCLUSIONS: </B>We think that revealing the anatomical, structural and numerical variations in the fundus will be useful in explaining the disease-symptom relationship.<BR><B>METHODS: </B>Level 4.