The variations of osseous structure of the internal acoustic canal: an anatomical study
Yükleniyor...
Tarih
2024
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Brazilian Association of Otorhinolaryngology and Cervicofacial Surgery
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Objectives: 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. Methods: Fifty-four temporal bones of unknown gender and age were examined with the surgical microscope. Results: 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. Conclusion: We think that revealing the anatomical, structural and numerical variations in the fundus will be useful in explaining the disease-symptom relationship.
Açıklama
Anahtar Kelimeler
Fundus of Internal Acoustic Canal, Internal Acoustic Meatus, Petrous Part, Temporal Bone Anatomy, Variations of IAC
Kaynak
Brazilian Journal of Otorhinolaryngology
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
90
Sayı
3
Künye
Sarı, E., Nteli Chatzioglou, G., Temirbekov, D., Aliyeva, A., Öztürk, A., & Gürses, İ. A. (2024). The variations of osseous structure of the internal acoustic canal: an anatomical study. Brazilian Journal of Otorhinolaryngology, 90(3), pp. 1-5. https://doi.org/10.1016/j.bjorl.2024.101414
