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Basilar invagination associated with chiari malformation type I: A literature review

Basilar invagination (BI) and Chiari malformation type I (CM-I) are very important anomalies that introduce instability and compression in the occipitocervical transition region and have complex clinical characteristics. These anomalies vary according to the affected structures. The present study re...

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Autores principales: Brito, José Nazareno Pearce de Oliveira, dos Santos, Bruna Afonso, Nascimento, Isys Fialho, Martins, Leonardo Augusto, Tavares, Cléciton Braga
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Faculdade de Medicina / USP 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6448527/
https://www.ncbi.nlm.nih.gov/pubmed/30970117
http://dx.doi.org/10.6061/clinics/2019/e653
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author Brito, José Nazareno Pearce de Oliveira
dos Santos, Bruna Afonso
Nascimento, Isys Fialho
Martins, Leonardo Augusto
Tavares, Cléciton Braga
author_facet Brito, José Nazareno Pearce de Oliveira
dos Santos, Bruna Afonso
Nascimento, Isys Fialho
Martins, Leonardo Augusto
Tavares, Cléciton Braga
author_sort Brito, José Nazareno Pearce de Oliveira
collection PubMed
description Basilar invagination (BI) and Chiari malformation type I (CM-I) are very important anomalies that introduce instability and compression in the occipitocervical transition region and have complex clinical characteristics. These anomalies vary according to the affected structures. The present study revises current knowledge regarding the anatomy, anatomo-physiology, clinical manifestations, and radiological findings of these entities and the associated surgical treatment approaches. A bibliographic survey was performed through a search in the Medline, PubMed, SciELO, Science and LILACS databases. When associated, these craniovertebral malformations result in neurological deficits due to neural parenchyma compression; however, the presence of microtraumas due to repetitive lesions caused by the bulb and cervical marrow instability has been highlighted as a determinant dysfunction. Surgical treatment is controversial and has many technical variations. Surgery is also challenging due to the complex anatomical characteristics and biomechanics of this region. Nevertheless, advances have been achieved in our understanding of related mechanisms, and compression and atlantoaxial instability are considered key elements when selecting the surgical approach.
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spelling pubmed-64485272019-04-09 Basilar invagination associated with chiari malformation type I: A literature review Brito, José Nazareno Pearce de Oliveira dos Santos, Bruna Afonso Nascimento, Isys Fialho Martins, Leonardo Augusto Tavares, Cléciton Braga Clinics (Sao Paulo) Review Article Basilar invagination (BI) and Chiari malformation type I (CM-I) are very important anomalies that introduce instability and compression in the occipitocervical transition region and have complex clinical characteristics. These anomalies vary according to the affected structures. The present study revises current knowledge regarding the anatomy, anatomo-physiology, clinical manifestations, and radiological findings of these entities and the associated surgical treatment approaches. A bibliographic survey was performed through a search in the Medline, PubMed, SciELO, Science and LILACS databases. When associated, these craniovertebral malformations result in neurological deficits due to neural parenchyma compression; however, the presence of microtraumas due to repetitive lesions caused by the bulb and cervical marrow instability has been highlighted as a determinant dysfunction. Surgical treatment is controversial and has many technical variations. Surgery is also challenging due to the complex anatomical characteristics and biomechanics of this region. Nevertheless, advances have been achieved in our understanding of related mechanisms, and compression and atlantoaxial instability are considered key elements when selecting the surgical approach. Faculdade de Medicina / USP 2019-04-04 2019 /pmc/articles/PMC6448527/ /pubmed/30970117 http://dx.doi.org/10.6061/clinics/2019/e653 Text en Copyright © 2019 CLINICS https://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Review Article
Brito, José Nazareno Pearce de Oliveira
dos Santos, Bruna Afonso
Nascimento, Isys Fialho
Martins, Leonardo Augusto
Tavares, Cléciton Braga
Basilar invagination associated with chiari malformation type I: A literature review
title Basilar invagination associated with chiari malformation type I: A literature review
title_full Basilar invagination associated with chiari malformation type I: A literature review
title_fullStr Basilar invagination associated with chiari malformation type I: A literature review
title_full_unstemmed Basilar invagination associated with chiari malformation type I: A literature review
title_short Basilar invagination associated with chiari malformation type I: A literature review
title_sort basilar invagination associated with chiari malformation type i: a literature review
topic Review Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6448527/
https://www.ncbi.nlm.nih.gov/pubmed/30970117
http://dx.doi.org/10.6061/clinics/2019/e653
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