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Chorda tympani nerve course and feasibility of its preservation during atresiaplasty for congenital aural atresia

OBJECTIVES: The association between the chorda tympani nerve (CTN) and atresiaplasty has not been investigated. This study aimed to describe the course of the CTN observed during atresiaplasty for congenital aural atresia (CAA) and explore the feasibility of CTN preservation. METHODS: In this retros...

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Autores principales: Yeon, Eun‐Kyeong, Kim, Min‐Kyu, Im, Se Yeon, Heo, Da Beom, Moon, Seong Jun, Choi, Jin Woong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley & Sons, Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9764774/
https://www.ncbi.nlm.nih.gov/pubmed/36544945
http://dx.doi.org/10.1002/lio2.938
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author Yeon, Eun‐Kyeong
Kim, Min‐Kyu
Im, Se Yeon
Heo, Da Beom
Moon, Seong Jun
Choi, Jin Woong
author_facet Yeon, Eun‐Kyeong
Kim, Min‐Kyu
Im, Se Yeon
Heo, Da Beom
Moon, Seong Jun
Choi, Jin Woong
author_sort Yeon, Eun‐Kyeong
collection PubMed
description OBJECTIVES: The association between the chorda tympani nerve (CTN) and atresiaplasty has not been investigated. This study aimed to describe the course of the CTN observed during atresiaplasty for congenital aural atresia (CAA) and explore the feasibility of CTN preservation. METHODS: In this retrospective study, six consecutive patients who underwent atresiaplasty in a tertiary academic center were included. The course of the tympanic segment of the CTN and its preservation feasibility were evaluated. Atresiaplasty was performed using an anterior approach. The average Jahrsdoerfer score was 8.7 points (range, 8–9 points). RESULTS: The CTN was located in the atretic plate in all patients. It emerged from an average of 5.6 mm (range, 5.2–6.1) inferior to the incus buttress and crossed the middle ear in an anterior–superior direction. The distance between the neck of the malleus and the CTN varied in the absence of the malleus handle. However, when the malleus handle developed, the CTN passed between the incus and the malleus handle. The CTN was preserved in two of the six patients. They had a Jahrsdoerfer score of 9 and grade I microtia. CONCLUSION: The CTN was located in the atretic plate, emerging from an average distance of 5.6 mm inferior to the incus buttress. The incus buttress might serve as a good anatomical landmark to identify and preserve the CTN. CTN preservation is feasible in atresiaplasty candidates with a Jahrsdoerfer score of 9 and auricular deformity of grade I. LEVEL OF EVIDENCE: 4.
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spelling pubmed-97647742022-12-20 Chorda tympani nerve course and feasibility of its preservation during atresiaplasty for congenital aural atresia Yeon, Eun‐Kyeong Kim, Min‐Kyu Im, Se Yeon Heo, Da Beom Moon, Seong Jun Choi, Jin Woong Laryngoscope Investig Otolaryngol Otology, Neurotology, and Neuroscience OBJECTIVES: The association between the chorda tympani nerve (CTN) and atresiaplasty has not been investigated. This study aimed to describe the course of the CTN observed during atresiaplasty for congenital aural atresia (CAA) and explore the feasibility of CTN preservation. METHODS: In this retrospective study, six consecutive patients who underwent atresiaplasty in a tertiary academic center were included. The course of the tympanic segment of the CTN and its preservation feasibility were evaluated. Atresiaplasty was performed using an anterior approach. The average Jahrsdoerfer score was 8.7 points (range, 8–9 points). RESULTS: The CTN was located in the atretic plate in all patients. It emerged from an average of 5.6 mm (range, 5.2–6.1) inferior to the incus buttress and crossed the middle ear in an anterior–superior direction. The distance between the neck of the malleus and the CTN varied in the absence of the malleus handle. However, when the malleus handle developed, the CTN passed between the incus and the malleus handle. The CTN was preserved in two of the six patients. They had a Jahrsdoerfer score of 9 and grade I microtia. CONCLUSION: The CTN was located in the atretic plate, emerging from an average distance of 5.6 mm inferior to the incus buttress. The incus buttress might serve as a good anatomical landmark to identify and preserve the CTN. CTN preservation is feasible in atresiaplasty candidates with a Jahrsdoerfer score of 9 and auricular deformity of grade I. LEVEL OF EVIDENCE: 4. John Wiley & Sons, Inc. 2022-09-30 /pmc/articles/PMC9764774/ /pubmed/36544945 http://dx.doi.org/10.1002/lio2.938 Text en © 2022 The Authors. Laryngoscope Investigative Otolaryngology published by Wiley Periodicals LLC on behalf of The Triological Society. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ (https://creativecommons.org/licenses/by-nc-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
spellingShingle Otology, Neurotology, and Neuroscience
Yeon, Eun‐Kyeong
Kim, Min‐Kyu
Im, Se Yeon
Heo, Da Beom
Moon, Seong Jun
Choi, Jin Woong
Chorda tympani nerve course and feasibility of its preservation during atresiaplasty for congenital aural atresia
title Chorda tympani nerve course and feasibility of its preservation during atresiaplasty for congenital aural atresia
title_full Chorda tympani nerve course and feasibility of its preservation during atresiaplasty for congenital aural atresia
title_fullStr Chorda tympani nerve course and feasibility of its preservation during atresiaplasty for congenital aural atresia
title_full_unstemmed Chorda tympani nerve course and feasibility of its preservation during atresiaplasty for congenital aural atresia
title_short Chorda tympani nerve course and feasibility of its preservation during atresiaplasty for congenital aural atresia
title_sort chorda tympani nerve course and feasibility of its preservation during atresiaplasty for congenital aural atresia
topic Otology, Neurotology, and Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9764774/
https://www.ncbi.nlm.nih.gov/pubmed/36544945
http://dx.doi.org/10.1002/lio2.938
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