Journal of Clinical Otolaryngology Head and Neck Surgery
The Busan, Ulsan, Gyeoungnam Branch of Korean Society of Otolaryngology-Head and Neck Surgery
원저

측두골 전산화단층촬영의 시상주위 영상으로 본 안면신경 및 하악골 관절과 고실윤과의 관계

정상희1, 전범조1,*, 김종형1, 배성천1, 이동희1, 전은주1
Sang Hee Chung1, Beom Cho Jun1,*, Jong Hyung Kim1, Seong Cheon Bae1, Dong Hee Lee1, Eun Joo Chun1
1가톨릭대학교 의과대학 이비인후과학교실
1Department of Otolaryngology-HNS Collage of Medicine, The Catholic University of Korea, Seoul, Korea
*교신저자: 전범조, 480-130 경기도 의정부시 금오동 65-1 가톨릭대학교 의과대학 이비인후과학교실 전화: (031) 820-3122·전송: (031) 847-0038 E-mail: otojun@catholic.ac.kr

© Copyright 2006 The Busan, Ulsan, Gyeoungnam Branch of Korean Society of Otolaryngology-Head and Neck Surgery. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Received: Sep 09, 2006; Accepted: Nov 15, 2006

Published Online: May 31, 2020

ABSTRACT

Background and Objectives: Canaloplasty has been an essential and additional step in the various middle ear surgical procedures. However, Two anatomical structures, the temporomandibular (TM) joint and the facial nerve limit the widening of bony annulus of tympanic bone anteriorly and posteriorly. The aim of this study was to obtain data on the anatomical relationship of facial nerve and TM joint using parasaggital reformatted images created fom high resolutional axial CT images, at the region of tympanic annulus. Patients and Methods: Parasaggital image of temporal bone CT by 3-dimensional reconstruction software in 30 adults who have no history of otitis media or head trauma was performed. Results: 1 ) Average angle between vertical line of parasaggital view and mid portion of 2nd genu at the virtual center of EAC-101.8°, 2) average angle between vertical line of parasaggital view and mid portion of stylomastoid foramen at the virtual center of EAC-31.9°, 3) average angle between horizontal line of parasaggital view and superior margin of TM Joint ant the virtual center of EAC-18.4°, 4) average angle between horizontal line of parasaggital view and bony margin of anterior epitympanum at the virtual center of EAC-43.0°, 5) average distance from bony portion of EAC to mid portion of 2nd genu-2.7 mm. Conclusion: The reconstructed high-resolution CT for planning canalopalsty can be useful in demonstrating related structure and decreasing the likelihood of surgical mishap and improving results. Canalplasty might be safely performed anterior-superiorly and posterior-inferiorly by being reminded of such anatomical parameters. (J Clinical Otolaryngol 2006;17:212–216)

Keywords: 안면신경; 턱관절; 전산화 단층촬영; 외이도
Keywords: Facial nerve; Temporomandibular joint; Computed tomography; External auditory canal