Endoscopic tympanoplasty type I using interlay technique

Abstract Background Tympanoplasty using the interlay technique has rarely been reported in transcanal endoscopic ear surgery, unlike the underlay technique. This is because many surgeons find it challenging to detach the epithelial layer of the tympanic membrane using only one hand. However, the epi...

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Main Authors: Masahiro Takahashi, Masaomi Motegi, Kazuhisa Yamamoto, Yutaka Yamamoto, Hiromi Kojima
Format: Article
Language:English
Published: BMC 2022-11-01
Series:Journal of Otolaryngology - Head and Neck Surgery
Subjects:
Online Access:https://doi.org/10.1186/s40463-022-00597-3
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author Masahiro Takahashi
Masaomi Motegi
Kazuhisa Yamamoto
Yutaka Yamamoto
Hiromi Kojima
author_facet Masahiro Takahashi
Masaomi Motegi
Kazuhisa Yamamoto
Yutaka Yamamoto
Hiromi Kojima
author_sort Masahiro Takahashi
collection DOAJ
description Abstract Background Tympanoplasty using the interlay technique has rarely been reported in transcanal endoscopic ear surgery, unlike the underlay technique. This is because many surgeons find it challenging to detach the epithelial layer of the tympanic membrane using only one hand. However, the epithelial layer can be easily detached from the inferior part of the tympanic membrane. Another key point is to actively improve anteroinferior visibility even if the overhang is slight because most perforations and postoperative reperforations are found in the anteroinferior quadrant of the tympanic membrane. We report the application of the interlay technique in endoscopic tympanoplasty type I for tympanic perforations. Methods We retrospectively reviewed the medical records of 51 patients who had undergone tympanoplasty using the interlay technique without ossiculoplasty between 2017 and 2020. We then compared the data with those of patients who underwent microscopic surgery (MS) using the underlay technique between 1998 and 2009 (n = 104). No other technique was used in each group during this period. Repair of tympanic membrane perforation and hearing outcomes were assessed for > 1 year postoperatively. Results The perforation sites were limited to the anterior, posterior, and anterior–posterior quadrants in 23, 1, and 27 ears, respectively. Perforations were closed in 50 of the 51 ears (98.0%), and the postoperative hearing was good (average air-bone [A-B] gap was 6.8 ± 5.8 dB). The surgical success rate for the repair of tympanic membrane perforation was not significantly different from the MS group (93.3%, P = 0.15). The average postoperative average A-B gap in the group that underwent the interlay technique was significantly different from that in the MS group (10.1 ± 6.6 dB, P < 0.01). Conclusion The interlay technique should be considered as one of the treatment methods in endoscopic surgery for tympanic perforations. Further study of the postoperative outcomes of this procedure should be conducted to establish the optimal surgical procedure for tympanic perforations. Trial registration: This study was retrospectively approved by the Institutional Review Board of the Jikei University, Tokyo, Japan (approval number: 32-205 10286). Video abstract Video abstract
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spelling doaj.art-16ed81af5730462cb9cf75aba1185d6d2023-01-03T11:21:51ZengBMCJournal of Otolaryngology - Head and Neck Surgery1916-02162022-11-015111710.1186/s40463-022-00597-3Endoscopic tympanoplasty type I using interlay techniqueMasahiro Takahashi0Masaomi Motegi1Kazuhisa Yamamoto2Yutaka Yamamoto3Hiromi Kojima4Department of Otorhinolaryngology, Jikei University School of MedicineDepartment of Otorhinolaryngology, Jikei University School of MedicineDepartment of Otorhinolaryngology, Jikei University School of MedicineDepartment of Otorhinolaryngology, Jikei University School of MedicineDepartment of Otorhinolaryngology, Jikei University School of MedicineAbstract Background Tympanoplasty using the interlay technique has rarely been reported in transcanal endoscopic ear surgery, unlike the underlay technique. This is because many surgeons find it challenging to detach the epithelial layer of the tympanic membrane using only one hand. However, the epithelial layer can be easily detached from the inferior part of the tympanic membrane. Another key point is to actively improve anteroinferior visibility even if the overhang is slight because most perforations and postoperative reperforations are found in the anteroinferior quadrant of the tympanic membrane. We report the application of the interlay technique in endoscopic tympanoplasty type I for tympanic perforations. Methods We retrospectively reviewed the medical records of 51 patients who had undergone tympanoplasty using the interlay technique without ossiculoplasty between 2017 and 2020. We then compared the data with those of patients who underwent microscopic surgery (MS) using the underlay technique between 1998 and 2009 (n = 104). No other technique was used in each group during this period. Repair of tympanic membrane perforation and hearing outcomes were assessed for > 1 year postoperatively. Results The perforation sites were limited to the anterior, posterior, and anterior–posterior quadrants in 23, 1, and 27 ears, respectively. Perforations were closed in 50 of the 51 ears (98.0%), and the postoperative hearing was good (average air-bone [A-B] gap was 6.8 ± 5.8 dB). The surgical success rate for the repair of tympanic membrane perforation was not significantly different from the MS group (93.3%, P = 0.15). The average postoperative average A-B gap in the group that underwent the interlay technique was significantly different from that in the MS group (10.1 ± 6.6 dB, P < 0.01). Conclusion The interlay technique should be considered as one of the treatment methods in endoscopic surgery for tympanic perforations. Further study of the postoperative outcomes of this procedure should be conducted to establish the optimal surgical procedure for tympanic perforations. Trial registration: This study was retrospectively approved by the Institutional Review Board of the Jikei University, Tokyo, Japan (approval number: 32-205 10286). Video abstract Video abstracthttps://doi.org/10.1186/s40463-022-00597-3Transcanal endoscopic ear surgeryMiddle ear surgeryTympanic perforationsMyringoplastyInterlay techniqueChronic otitis media
spellingShingle Masahiro Takahashi
Masaomi Motegi
Kazuhisa Yamamoto
Yutaka Yamamoto
Hiromi Kojima
Endoscopic tympanoplasty type I using interlay technique
Journal of Otolaryngology - Head and Neck Surgery
Transcanal endoscopic ear surgery
Middle ear surgery
Tympanic perforations
Myringoplasty
Interlay technique
Chronic otitis media
title Endoscopic tympanoplasty type I using interlay technique
title_full Endoscopic tympanoplasty type I using interlay technique
title_fullStr Endoscopic tympanoplasty type I using interlay technique
title_full_unstemmed Endoscopic tympanoplasty type I using interlay technique
title_short Endoscopic tympanoplasty type I using interlay technique
title_sort endoscopic tympanoplasty type i using interlay technique
topic Transcanal endoscopic ear surgery
Middle ear surgery
Tympanic perforations
Myringoplasty
Interlay technique
Chronic otitis media
url https://doi.org/10.1186/s40463-022-00597-3
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AT kazuhisayamamoto endoscopictympanoplastytypeiusinginterlaytechnique
AT yutakayamamoto endoscopictympanoplastytypeiusinginterlaytechnique
AT hiromikojima endoscopictympanoplastytypeiusinginterlaytechnique