Variations of chorda tympani nerve in endoscopic stapes surgery
Ali Mohamed, A., Abdelbaki Abdullah, A., Talaat Abdelhakim, M., Mohamed Fawzy, A., Ali Abdallah, A., Mohammed Abdelzahet, K. (2024). Variations of chorda tympani nerve in endoscopic stapes surgery. EKB Journal Management System, (), -. doi: 10.21608/mjmr.2024.303042.1742
Ahmed Ali Mohamed; Adel Abdelbaki Abdullah; Moustafa Talaat Abdelhakim; Amira Mohamed Fawzy; Abeer Abdallah Ali Abdallah; Khaled Mohammed Abdelzahet. "Variations of chorda tympani nerve in endoscopic stapes surgery". EKB Journal Management System, , , 2024, -. doi: 10.21608/mjmr.2024.303042.1742
Ali Mohamed, A., Abdelbaki Abdullah, A., Talaat Abdelhakim, M., Mohamed Fawzy, A., Ali Abdallah, A., Mohammed Abdelzahet, K. (2024). 'Variations of chorda tympani nerve in endoscopic stapes surgery', EKB Journal Management System, (), pp. -. doi: 10.21608/mjmr.2024.303042.1742
Ali Mohamed, A., Abdelbaki Abdullah, A., Talaat Abdelhakim, M., Mohamed Fawzy, A., Ali Abdallah, A., Mohammed Abdelzahet, K. Variations of chorda tympani nerve in endoscopic stapes surgery. EKB Journal Management System, 2024; (): -. doi: 10.21608/mjmr.2024.303042.1742

Variations of chorda tympani nerve in endoscopic stapes surgery

Minia Journal of Medical Research
Articles in Press, Accepted Manuscript, Available Online from 07 October 2024  XML
Document Type: Original Article
DOI: 10.21608/mjmr.2024.303042.1742
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Authors
Ahmed Ali Mohamedorcid 1; Adel Abdelbaki Abdullahorcid 2; Moustafa Talaat Abdelhakimorcid 3; Amira Mohamed Fawzy4; Abeer Abdallah Ali Abdallah email 5; Khaled Mohammed Abdelzahet6
1lecturer of otorhinolaryngology faculty of medicine Minia university
2Department of Otolaryngology, Minia faculty of Medicine at Minia University, Minia, Egypt
3professor of otorhinolaryngology Faculty of medicine- Minia university
4lecturer of Audiovestibular medicine , Faculty of medicine- Minia university
5Otorhinolaryngology-Faculty of medicine-Minia university ,Minia
6Lecturer of otorhinolaryngology-Faculty of medicine-Minia university
Abstract
Objective: To reveal the factors affecting the incidence of chorda tympani nerve )CTN) transection during middle ear surgery.

Study Design: Prospective case review.

Setting: Tertiary referral center.

Patients: We analyzed 20 ears with otosclerosis that underwent stapes surgery during 2022-2023

Main Outcome Measure: To confirm CTN transection, intraoperative endoscopic video.

We used the same video images to determine the anatomical variation of the CTN course in the middle ear and determine types of chord tympani.

Results:

25% 5 cases type1 of chorda

65% 13 cases type2

10% 2 cases type3

CTN anatomical variants such as the “Attached Short type” and “Ultrashort type” showed a significantly higher CTN transection incidence

Conclusion:

Endoscopic ear surgery provides improved visibility, reduces the necessity for significant manipulation of the chorda tympani, and subsequently lowers the occurrence of CTN injury.

Performing a preoperative assessment to determine the extent of stapes involvement and the anatomical position of the CTN course could assist in identifying patients who are at a higher risk of experiencing iatrogenic CTN transection.
Keywords
chorda tympani nerve )CTN); transcanal endoscopic ear surgery (TEES); chordal eminence (CE)
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