Proximity of carotid canal wall to tympanic membrane: A human temporal bone study

Seishi Hasebe, Isamu Sando, Yorihisa Orita

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Objective: The objective was to examine the possible risk of injury to the internal carotid artery during procedures in the middle ear, including myringotomy. Study Design: Histopathological morphometric study of human temporal bones. Methods: One hundred forty-two human temporal bone specimens obtained from 92 individuals without any known ear disease were prepared for light microscopic study. Using 83 bones that were available for measurement, the thickness of the carotid canal wall (CCW), which is the medial wall of the bony portion of the eustachian tube, was measured. Using 15 bones selected for three-dimensional measurement, the closest distance from CCW to the anterior tympanic annulus was measured. Using all 142 temporal bone specimens, the CCW was examined to detect the presence of partial dehiscence. In one case, the images of CCW dehiscence and its surrounding structures were reconstructed by a personal computer. Results: The thickness of the CCW was 0.00 to 0.73 mm (average thickness, 0.24 mm [±0.12 mm]). The distance from the CCW to the anterior tympanic annulus was 1.8 to 8.1 mm (average distance, 4.9 [±1.7 mm]). Dehiscence of CCW was observed in 7 (49%) of 142 temporal bone specimens. The reconstructed image showed that the posterior half of the dehiscence of CCW could be seen from the external ear canal. Conclusions: The CCW was found to be extremely thin or even dehiscent in some cases, rendering the internal carotid artery vulnerable during transtympanic procedures. The study's findings emphasized the need for judicious care when operating in the anterior mesotympanum.

Original languageEnglish
Pages (from-to)802-807
Number of pages6
JournalLaryngoscope
Volume113
Issue number5
DOIs
Publication statusPublished - May 1 2003
Externally publishedYes

Fingerprint

Tympanic Membrane
Temporal Bone
Internal Carotid Artery
Ear Diseases
Eustachian Tube
Bone and Bones
Ear Canal
Microcomputers
Middle Ear
Light
Wounds and Injuries

Keywords

  • Bleeding
  • Carotid
  • Dehiscence
  • Histopathology
  • Human temporal bone

ASJC Scopus subject areas

  • Otorhinolaryngology

Cite this

Proximity of carotid canal wall to tympanic membrane : A human temporal bone study. / Hasebe, Seishi; Sando, Isamu; Orita, Yorihisa.

In: Laryngoscope, Vol. 113, No. 5, 01.05.2003, p. 802-807.

Research output: Contribution to journalArticle

Hasebe, Seishi ; Sando, Isamu ; Orita, Yorihisa. / Proximity of carotid canal wall to tympanic membrane : A human temporal bone study. In: Laryngoscope. 2003 ; Vol. 113, No. 5. pp. 802-807.
@article{d7d1c079ce0c42928701e43480f575e3,
title = "Proximity of carotid canal wall to tympanic membrane: A human temporal bone study",
abstract = "Objective: The objective was to examine the possible risk of injury to the internal carotid artery during procedures in the middle ear, including myringotomy. Study Design: Histopathological morphometric study of human temporal bones. Methods: One hundred forty-two human temporal bone specimens obtained from 92 individuals without any known ear disease were prepared for light microscopic study. Using 83 bones that were available for measurement, the thickness of the carotid canal wall (CCW), which is the medial wall of the bony portion of the eustachian tube, was measured. Using 15 bones selected for three-dimensional measurement, the closest distance from CCW to the anterior tympanic annulus was measured. Using all 142 temporal bone specimens, the CCW was examined to detect the presence of partial dehiscence. In one case, the images of CCW dehiscence and its surrounding structures were reconstructed by a personal computer. Results: The thickness of the CCW was 0.00 to 0.73 mm (average thickness, 0.24 mm [±0.12 mm]). The distance from the CCW to the anterior tympanic annulus was 1.8 to 8.1 mm (average distance, 4.9 [±1.7 mm]). Dehiscence of CCW was observed in 7 (49{\%}) of 142 temporal bone specimens. The reconstructed image showed that the posterior half of the dehiscence of CCW could be seen from the external ear canal. Conclusions: The CCW was found to be extremely thin or even dehiscent in some cases, rendering the internal carotid artery vulnerable during transtympanic procedures. The study's findings emphasized the need for judicious care when operating in the anterior mesotympanum.",
keywords = "Bleeding, Carotid, Dehiscence, Histopathology, Human temporal bone",
author = "Seishi Hasebe and Isamu Sando and Yorihisa Orita",
year = "2003",
month = "5",
day = "1",
doi = "10.1097/00005537-200305000-00007",
language = "English",
volume = "113",
pages = "802--807",
journal = "Laryngoscope",
issn = "0023-852X",
publisher = "John Wiley and Sons Inc.",
number = "5",

}

TY - JOUR

T1 - Proximity of carotid canal wall to tympanic membrane

T2 - A human temporal bone study

AU - Hasebe, Seishi

AU - Sando, Isamu

AU - Orita, Yorihisa

PY - 2003/5/1

Y1 - 2003/5/1

N2 - Objective: The objective was to examine the possible risk of injury to the internal carotid artery during procedures in the middle ear, including myringotomy. Study Design: Histopathological morphometric study of human temporal bones. Methods: One hundred forty-two human temporal bone specimens obtained from 92 individuals without any known ear disease were prepared for light microscopic study. Using 83 bones that were available for measurement, the thickness of the carotid canal wall (CCW), which is the medial wall of the bony portion of the eustachian tube, was measured. Using 15 bones selected for three-dimensional measurement, the closest distance from CCW to the anterior tympanic annulus was measured. Using all 142 temporal bone specimens, the CCW was examined to detect the presence of partial dehiscence. In one case, the images of CCW dehiscence and its surrounding structures were reconstructed by a personal computer. Results: The thickness of the CCW was 0.00 to 0.73 mm (average thickness, 0.24 mm [±0.12 mm]). The distance from the CCW to the anterior tympanic annulus was 1.8 to 8.1 mm (average distance, 4.9 [±1.7 mm]). Dehiscence of CCW was observed in 7 (49%) of 142 temporal bone specimens. The reconstructed image showed that the posterior half of the dehiscence of CCW could be seen from the external ear canal. Conclusions: The CCW was found to be extremely thin or even dehiscent in some cases, rendering the internal carotid artery vulnerable during transtympanic procedures. The study's findings emphasized the need for judicious care when operating in the anterior mesotympanum.

AB - Objective: The objective was to examine the possible risk of injury to the internal carotid artery during procedures in the middle ear, including myringotomy. Study Design: Histopathological morphometric study of human temporal bones. Methods: One hundred forty-two human temporal bone specimens obtained from 92 individuals without any known ear disease were prepared for light microscopic study. Using 83 bones that were available for measurement, the thickness of the carotid canal wall (CCW), which is the medial wall of the bony portion of the eustachian tube, was measured. Using 15 bones selected for three-dimensional measurement, the closest distance from CCW to the anterior tympanic annulus was measured. Using all 142 temporal bone specimens, the CCW was examined to detect the presence of partial dehiscence. In one case, the images of CCW dehiscence and its surrounding structures were reconstructed by a personal computer. Results: The thickness of the CCW was 0.00 to 0.73 mm (average thickness, 0.24 mm [±0.12 mm]). The distance from the CCW to the anterior tympanic annulus was 1.8 to 8.1 mm (average distance, 4.9 [±1.7 mm]). Dehiscence of CCW was observed in 7 (49%) of 142 temporal bone specimens. The reconstructed image showed that the posterior half of the dehiscence of CCW could be seen from the external ear canal. Conclusions: The CCW was found to be extremely thin or even dehiscent in some cases, rendering the internal carotid artery vulnerable during transtympanic procedures. The study's findings emphasized the need for judicious care when operating in the anterior mesotympanum.

KW - Bleeding

KW - Carotid

KW - Dehiscence

KW - Histopathology

KW - Human temporal bone

UR - http://www.scopus.com/inward/record.url?scp=0037965959&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037965959&partnerID=8YFLogxK

U2 - 10.1097/00005537-200305000-00007

DO - 10.1097/00005537-200305000-00007

M3 - Article

C2 - 12792314

AN - SCOPUS:0037965959

VL - 113

SP - 802

EP - 807

JO - Laryngoscope

JF - Laryngoscope

SN - 0023-852X

IS - 5

ER -