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Thoracic Pedicle Morphometry of Dry Vertebral Columns in Relation to Trans-Pedicular Fixation: A Cross-Sectional Study From Central India

Introduction Trans-pedicular screw fixation is one of the main modalities of spinal instrumentation today. It is particularly challenging in the thoracic spine due to the narrow pedicle dimensions especially in the upper and mid-thoracic levels. We aimed to study the anatomical variations like pedic...

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Autores principales: Verma, Virendra, Santoshi, John A, Jain, Vaibhav, Patel, Manmohan, Dwivedi, Manish, Nagar, Manoj, Selvanayagam, Rajkumar, Pal, Dharm
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Cureus 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7294881/
https://www.ncbi.nlm.nih.gov/pubmed/32550067
http://dx.doi.org/10.7759/cureus.8148
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author Verma, Virendra
Santoshi, John A
Jain, Vaibhav
Patel, Manmohan
Dwivedi, Manish
Nagar, Manoj
Selvanayagam, Rajkumar
Pal, Dharm
author_facet Verma, Virendra
Santoshi, John A
Jain, Vaibhav
Patel, Manmohan
Dwivedi, Manish
Nagar, Manoj
Selvanayagam, Rajkumar
Pal, Dharm
author_sort Verma, Virendra
collection PubMed
description Introduction Trans-pedicular screw fixation is one of the main modalities of spinal instrumentation today. It is particularly challenging in the thoracic spine due to the narrow pedicle dimensions especially in the upper and mid-thoracic levels. We aimed to study the anatomical variations like pedicle dimensions and angulation in transverse and sagittal planes. Material and methods We conducted an anatomical investigation on 20 dry vertebral columns (14 male and six female), from T1 to T12 levels. The measurements included pedicle width, height, and transverse and sagittal angles of the pedicle. Numerical variables were summarized using mean and standard deviation. Results T12 vertebra was found to have the widest pedicle width (mean 7.89 ± 0.70 mm) and the widest pedicle height (mean 15.45±0.78 mm) while T5 vertebra (mean 3.65±0.40 mm) had the narrowest pedicle width. T1 vertebra had the maximum transverse angle of the pedicle (mean 30.37±2.56 degree); whereas, T2 vertebra had the maximum sagittal angle (mean 19.22±2.24 degree). Conclusion We have reported detailed pedicle measurements including their angulation for the thoracic spine in dry vertebral columns of central India. The pedicles are directed more medially from T1 to T10 levels and are almost neutral at T11 and T12 levels. These findings would not only be of immense help to the spinal surgeons but also help in designing implants and instrumentations specific for the thoracic spine for the central Indian population as well as aiding surgeons to perform more precise and, therefore, safe surgical procedures.
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spelling pubmed-72948812020-06-16 Thoracic Pedicle Morphometry of Dry Vertebral Columns in Relation to Trans-Pedicular Fixation: A Cross-Sectional Study From Central India Verma, Virendra Santoshi, John A Jain, Vaibhav Patel, Manmohan Dwivedi, Manish Nagar, Manoj Selvanayagam, Rajkumar Pal, Dharm Cureus Neurosurgery Introduction Trans-pedicular screw fixation is one of the main modalities of spinal instrumentation today. It is particularly challenging in the thoracic spine due to the narrow pedicle dimensions especially in the upper and mid-thoracic levels. We aimed to study the anatomical variations like pedicle dimensions and angulation in transverse and sagittal planes. Material and methods We conducted an anatomical investigation on 20 dry vertebral columns (14 male and six female), from T1 to T12 levels. The measurements included pedicle width, height, and transverse and sagittal angles of the pedicle. Numerical variables were summarized using mean and standard deviation. Results T12 vertebra was found to have the widest pedicle width (mean 7.89 ± 0.70 mm) and the widest pedicle height (mean 15.45±0.78 mm) while T5 vertebra (mean 3.65±0.40 mm) had the narrowest pedicle width. T1 vertebra had the maximum transverse angle of the pedicle (mean 30.37±2.56 degree); whereas, T2 vertebra had the maximum sagittal angle (mean 19.22±2.24 degree). Conclusion We have reported detailed pedicle measurements including their angulation for the thoracic spine in dry vertebral columns of central India. The pedicles are directed more medially from T1 to T10 levels and are almost neutral at T11 and T12 levels. These findings would not only be of immense help to the spinal surgeons but also help in designing implants and instrumentations specific for the thoracic spine for the central Indian population as well as aiding surgeons to perform more precise and, therefore, safe surgical procedures. Cureus 2020-05-16 /pmc/articles/PMC7294881/ /pubmed/32550067 http://dx.doi.org/10.7759/cureus.8148 Text en Copyright © 2020, Verma et al. http://creativecommons.org/licenses/by/3.0/ 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 author and source are credited.
spellingShingle Neurosurgery
Verma, Virendra
Santoshi, John A
Jain, Vaibhav
Patel, Manmohan
Dwivedi, Manish
Nagar, Manoj
Selvanayagam, Rajkumar
Pal, Dharm
Thoracic Pedicle Morphometry of Dry Vertebral Columns in Relation to Trans-Pedicular Fixation: A Cross-Sectional Study From Central India
title Thoracic Pedicle Morphometry of Dry Vertebral Columns in Relation to Trans-Pedicular Fixation: A Cross-Sectional Study From Central India
title_full Thoracic Pedicle Morphometry of Dry Vertebral Columns in Relation to Trans-Pedicular Fixation: A Cross-Sectional Study From Central India
title_fullStr Thoracic Pedicle Morphometry of Dry Vertebral Columns in Relation to Trans-Pedicular Fixation: A Cross-Sectional Study From Central India
title_full_unstemmed Thoracic Pedicle Morphometry of Dry Vertebral Columns in Relation to Trans-Pedicular Fixation: A Cross-Sectional Study From Central India
title_short Thoracic Pedicle Morphometry of Dry Vertebral Columns in Relation to Trans-Pedicular Fixation: A Cross-Sectional Study From Central India
title_sort thoracic pedicle morphometry of dry vertebral columns in relation to trans-pedicular fixation: a cross-sectional study from central india
topic Neurosurgery
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7294881/
https://www.ncbi.nlm.nih.gov/pubmed/32550067
http://dx.doi.org/10.7759/cureus.8148
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