Transcanal Endoscopic Type III Tympanoplasty: Comparison with Microscopic Ear Surgery

By June 7, 2019

Kobayashi, Taisuke1; Komori, Masahiro1; Hyodo, Masamitsu1
1 Department of Otolaryngology, Kochi Medical School, Nankoku, Kochi, JAPAN

Introduction:
Recent reports have shown that the surgical results of transcanal endoscopic ear surgery (TEES) in various tympanoplasty are equal to those of microscopic ear surgery (MES). In this study, the surgical results of type III tympanoplasty using TEES in our institution are reported.

Methods:
Study Design: Retrospective case review
Setting: Tertiary referral center
Patients: The study subjects were patients who underwent Type III tympanoplasty between January 2011 and March 2018 in our hospital. Patients who were not followed-up for more than 12 months were excluded. Patients who underwent the canal wall down procedure were also excluded.
Intervention: Type III tympanoplasty

Discussion:
Main Outcome Measures: Air-bone gap (ABG) gain and ABG closure rate of less than 20 dB was compared between TEES group and MES group.
Results: TEES group included 27 ears and MES group 39 ears. The mean ABG gain was 9.3 dB in the TEES group and 8.2 dB in the MES group. The ABG closure rate of less than 20 dB was 56% in the TEES group and 62% in the MES group; the difference was not significant. Neither group had any major complications.
Conclusions: The hearing results of type III tympanoplasty with TEES were equal to those with MES. Type III tympanoplasty using TEES is a safe surgical procedure.