Cargando…

Computed Tomography- and Radiography-Based Morphometric Analysis of the Lateral Mass of the Subaxial Cervical Spine in the Indian Population

STUDY DESIGN: This was a double-blinded cross-sectional study, which obtained no financial support for the research. PURPOSE: To obtain a detailed morphometry of the lateral mass of the subaxial cervical spine. OVERVIEW OF LITERATURE: The literature offers little data on the dimensions of the latera...

Descripción completa

Detalles Bibliográficos
Autores principales: Patil, Nirmal D, Srivastava, Sudhir K, Bhosale, Sunil, Purohit, Shaligram
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Korean Society of Spine Surgery 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5821926/
https://www.ncbi.nlm.nih.gov/pubmed/29503678
http://dx.doi.org/10.4184/asj.2018.12.1.18
_version_ 1783301588816756736
author Patil, Nirmal D
Srivastava, Sudhir K
Bhosale, Sunil
Purohit, Shaligram
author_facet Patil, Nirmal D
Srivastava, Sudhir K
Bhosale, Sunil
Purohit, Shaligram
author_sort Patil, Nirmal D
collection PubMed
description STUDY DESIGN: This was a double-blinded cross-sectional study, which obtained no financial support for the research. PURPOSE: To obtain a detailed morphometry of the lateral mass of the subaxial cervical spine. OVERVIEW OF LITERATURE: The literature offers little data on the dimensions of the lateral mass of the subaxial cervical spine. METHODS: We assessed axial, sagittal, and coronal computed tomography (CT) cuts and anteroposterior and lateral X-rays of the lateral mass of the subaxial cervical spine of 104 patients (2,080 lateral masses) who presented to a tertiary care public hospital (King Edward Memorial Hospital, Mumbai) in a metropolitan city in India. RESULTS: For a majority of the parameters, males and females significantly differed at all levels (p<0.05). Females consistently required higher (p<0.05) minimum lateral angulation and lateral angulation. While the minimum lateral angulation followed the order of C5<C4<C6<C3, the lateral angulation followed the order of C3<C5<C4<C6. The lateral mass becomes longer and narrower from C3 to C7. In axial cuts, the dimensions increased from C3 to C6. The sagittal cut thickness and diagonal length increased and the sagittal cut height decreased from C3 to C7. The sagittal cut height was consistently lower in the Indian population at all levels, especially at the C7 level, as compared with the Western population, thereby questioning the acceptance of a 3.5-mm lateral mass screw. A good correlation exists between X-ray- and CT-based assessments of the lateral mass. CONCLUSIONS: Larger lateral angulation is required for Indian patients, especially females. The screw length can be effectively calculated by analyzing the lateral X-ray. A CT scan should be reserved for specific indications, and a caution must be exercised while inserting C7 lateral mass screws.
format Online
Article
Text
id pubmed-5821926
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher Korean Society of Spine Surgery
record_format MEDLINE/PubMed
spelling pubmed-58219262018-03-02 Computed Tomography- and Radiography-Based Morphometric Analysis of the Lateral Mass of the Subaxial Cervical Spine in the Indian Population Patil, Nirmal D Srivastava, Sudhir K Bhosale, Sunil Purohit, Shaligram Asian Spine J Basic Study STUDY DESIGN: This was a double-blinded cross-sectional study, which obtained no financial support for the research. PURPOSE: To obtain a detailed morphometry of the lateral mass of the subaxial cervical spine. OVERVIEW OF LITERATURE: The literature offers little data on the dimensions of the lateral mass of the subaxial cervical spine. METHODS: We assessed axial, sagittal, and coronal computed tomography (CT) cuts and anteroposterior and lateral X-rays of the lateral mass of the subaxial cervical spine of 104 patients (2,080 lateral masses) who presented to a tertiary care public hospital (King Edward Memorial Hospital, Mumbai) in a metropolitan city in India. RESULTS: For a majority of the parameters, males and females significantly differed at all levels (p<0.05). Females consistently required higher (p<0.05) minimum lateral angulation and lateral angulation. While the minimum lateral angulation followed the order of C5<C4<C6<C3, the lateral angulation followed the order of C3<C5<C4<C6. The lateral mass becomes longer and narrower from C3 to C7. In axial cuts, the dimensions increased from C3 to C6. The sagittal cut thickness and diagonal length increased and the sagittal cut height decreased from C3 to C7. The sagittal cut height was consistently lower in the Indian population at all levels, especially at the C7 level, as compared with the Western population, thereby questioning the acceptance of a 3.5-mm lateral mass screw. A good correlation exists between X-ray- and CT-based assessments of the lateral mass. CONCLUSIONS: Larger lateral angulation is required for Indian patients, especially females. The screw length can be effectively calculated by analyzing the lateral X-ray. A CT scan should be reserved for specific indications, and a caution must be exercised while inserting C7 lateral mass screws. Korean Society of Spine Surgery 2018-02 2018-02-07 /pmc/articles/PMC5821926/ /pubmed/29503678 http://dx.doi.org/10.4184/asj.2018.12.1.18 Text en Copyright © 2018 by Korean Society of Spine Surgery http://creativecommons.org/licenses/by-nc/4.0/ 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.
spellingShingle Basic Study
Patil, Nirmal D
Srivastava, Sudhir K
Bhosale, Sunil
Purohit, Shaligram
Computed Tomography- and Radiography-Based Morphometric Analysis of the Lateral Mass of the Subaxial Cervical Spine in the Indian Population
title Computed Tomography- and Radiography-Based Morphometric Analysis of the Lateral Mass of the Subaxial Cervical Spine in the Indian Population
title_full Computed Tomography- and Radiography-Based Morphometric Analysis of the Lateral Mass of the Subaxial Cervical Spine in the Indian Population
title_fullStr Computed Tomography- and Radiography-Based Morphometric Analysis of the Lateral Mass of the Subaxial Cervical Spine in the Indian Population
title_full_unstemmed Computed Tomography- and Radiography-Based Morphometric Analysis of the Lateral Mass of the Subaxial Cervical Spine in the Indian Population
title_short Computed Tomography- and Radiography-Based Morphometric Analysis of the Lateral Mass of the Subaxial Cervical Spine in the Indian Population
title_sort computed tomography- and radiography-based morphometric analysis of the lateral mass of the subaxial cervical spine in the indian population
topic Basic Study
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5821926/
https://www.ncbi.nlm.nih.gov/pubmed/29503678
http://dx.doi.org/10.4184/asj.2018.12.1.18
work_keys_str_mv AT patilnirmald computedtomographyandradiographybasedmorphometricanalysisofthelateralmassofthesubaxialcervicalspineintheindianpopulation
AT srivastavasudhirk computedtomographyandradiographybasedmorphometricanalysisofthelateralmassofthesubaxialcervicalspineintheindianpopulation
AT bhosalesunil computedtomographyandradiographybasedmorphometricanalysisofthelateralmassofthesubaxialcervicalspineintheindianpopulation
AT purohitshaligram computedtomographyandradiographybasedmorphometricanalysisofthelateralmassofthesubaxialcervicalspineintheindianpopulation