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Biomechanics of Third Window Syndrome

Third window syndrome describes a set of vestibular and auditory symptoms that arise when a pathological third mobile window is present in the bony labyrinth of the inner ear. The pathological mobile window (or windows) adds to the oval and round windows, disrupting normal auditory and vestibular fu...

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Detalles Bibliográficos
Autores principales: Iversen, Marta M., Rabbitt, Richard D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7477384/
https://www.ncbi.nlm.nih.gov/pubmed/32982922
http://dx.doi.org/10.3389/fneur.2020.00891
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author Iversen, Marta M.
Rabbitt, Richard D.
author_facet Iversen, Marta M.
Rabbitt, Richard D.
author_sort Iversen, Marta M.
collection PubMed
description Third window syndrome describes a set of vestibular and auditory symptoms that arise when a pathological third mobile window is present in the bony labyrinth of the inner ear. The pathological mobile window (or windows) adds to the oval and round windows, disrupting normal auditory and vestibular function by altering biomechanics of the inner ear. The most commonly occurring third window syndrome arises from superior semicircular canal dehiscence (SSCD), where a section of bone overlying the superior semicircular canal is absent or thinned (near-dehiscence). The presentation of SSCD syndrome is well characterized by clinical audiological and vestibular tests. In this review, we describe how the third compliant window introduced by a SSCD alters the biomechanics of the inner ear and thereby leads to vestibular and auditory symptoms. Understanding the biomechanical origins of SSCD further provides insight into other third window syndromes and the potential of restoring function or reducing symptoms through surgical repair.
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spelling pubmed-74773842020-09-26 Biomechanics of Third Window Syndrome Iversen, Marta M. Rabbitt, Richard D. Front Neurol Neurology Third window syndrome describes a set of vestibular and auditory symptoms that arise when a pathological third mobile window is present in the bony labyrinth of the inner ear. The pathological mobile window (or windows) adds to the oval and round windows, disrupting normal auditory and vestibular function by altering biomechanics of the inner ear. The most commonly occurring third window syndrome arises from superior semicircular canal dehiscence (SSCD), where a section of bone overlying the superior semicircular canal is absent or thinned (near-dehiscence). The presentation of SSCD syndrome is well characterized by clinical audiological and vestibular tests. In this review, we describe how the third compliant window introduced by a SSCD alters the biomechanics of the inner ear and thereby leads to vestibular and auditory symptoms. Understanding the biomechanical origins of SSCD further provides insight into other third window syndromes and the potential of restoring function or reducing symptoms through surgical repair. Frontiers Media S.A. 2020-08-25 /pmc/articles/PMC7477384/ /pubmed/32982922 http://dx.doi.org/10.3389/fneur.2020.00891 Text en Copyright © 2020 Iversen and Rabbitt. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neurology
Iversen, Marta M.
Rabbitt, Richard D.
Biomechanics of Third Window Syndrome
title Biomechanics of Third Window Syndrome
title_full Biomechanics of Third Window Syndrome
title_fullStr Biomechanics of Third Window Syndrome
title_full_unstemmed Biomechanics of Third Window Syndrome
title_short Biomechanics of Third Window Syndrome
title_sort biomechanics of third window syndrome
topic Neurology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7477384/
https://www.ncbi.nlm.nih.gov/pubmed/32982922
http://dx.doi.org/10.3389/fneur.2020.00891
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