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Odontoid Incidence: A Novel Cervical Parameter Influencing Cervical Alignment From Top to Bottom

OBJECTIVE: By using angulation of the axis itself, this study aims to define and analyze odontoid incidence (OI) and odontoid tilt (OT) as novel cervical alignment parameters and investigate their correlations with cervical alignment. METHODS: Novel and existing parameters were measured with whole-s...

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Autores principales: Lee, Jae-Koo, Hyun, Seung-Jae, Kim, Ki-Jeong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Korean Spinal Neurosurgery Society 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9260555/
https://www.ncbi.nlm.nih.gov/pubmed/35793937
http://dx.doi.org/10.14245/ns.2244220.110
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author Lee, Jae-Koo
Hyun, Seung-Jae
Kim, Ki-Jeong
author_facet Lee, Jae-Koo
Hyun, Seung-Jae
Kim, Ki-Jeong
author_sort Lee, Jae-Koo
collection PubMed
description OBJECTIVE: By using angulation of the axis itself, this study aims to define and analyze odontoid incidence (OI) and odontoid tilt (OT) as novel cervical alignment parameters and investigate their correlations with cervical alignment. METHODS: Novel and existing parameters were measured with whole-spine lateral plain radiographs and EOS images of 42 adults without cervical symptoms. The correlations of OI, OT, C2 slope (C2S), and T1 slope (T1S) were calculated. RESULTS: The OI, OT, and C2S showed significant correlations with C2–7 angle (r = 0.43, r = -0.42, r = 0.62, respectively) and C0–2 angle (r = -0.33, r = 0.48, r = -0.61, respectively). OI, OT, T1S were independent predictors of the C2–7 angle in univariate regression analysis (adjusted-R(2) = 0.17, R(2) = 0.15, R(2) = 0.28, respectively). OI, OT, and T1S were independent predictors in the multivariable regression analysis with estimated standardized coefficients of 0.36, -0.67, -0.69, respectively (adjusted- R(2) = 0.80, p < 0.001). Regarding the C0–2 angle, OI and OT were independent predictors in the univariate regression analysis (adjusted-R(2) = 0.08, R(2) = 0.21, respectively). CONCLUSION: OI, OT, and C2S had significant correlations with cervical alignment. As the pelvic incidence, the OI is the only anatomical and constant parameter that could be used as a reference point related to the cervical spine from the rostral end. The study results may serve as baseline data for further studies on the alignment and balance of the cervical spine.
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spelling pubmed-92605552022-07-20 Odontoid Incidence: A Novel Cervical Parameter Influencing Cervical Alignment From Top to Bottom Lee, Jae-Koo Hyun, Seung-Jae Kim, Ki-Jeong Neurospine Original Article OBJECTIVE: By using angulation of the axis itself, this study aims to define and analyze odontoid incidence (OI) and odontoid tilt (OT) as novel cervical alignment parameters and investigate their correlations with cervical alignment. METHODS: Novel and existing parameters were measured with whole-spine lateral plain radiographs and EOS images of 42 adults without cervical symptoms. The correlations of OI, OT, C2 slope (C2S), and T1 slope (T1S) were calculated. RESULTS: The OI, OT, and C2S showed significant correlations with C2–7 angle (r = 0.43, r = -0.42, r = 0.62, respectively) and C0–2 angle (r = -0.33, r = 0.48, r = -0.61, respectively). OI, OT, T1S were independent predictors of the C2–7 angle in univariate regression analysis (adjusted-R(2) = 0.17, R(2) = 0.15, R(2) = 0.28, respectively). OI, OT, and T1S were independent predictors in the multivariable regression analysis with estimated standardized coefficients of 0.36, -0.67, -0.69, respectively (adjusted- R(2) = 0.80, p < 0.001). Regarding the C0–2 angle, OI and OT were independent predictors in the univariate regression analysis (adjusted-R(2) = 0.08, R(2) = 0.21, respectively). CONCLUSION: OI, OT, and C2S had significant correlations with cervical alignment. As the pelvic incidence, the OI is the only anatomical and constant parameter that could be used as a reference point related to the cervical spine from the rostral end. The study results may serve as baseline data for further studies on the alignment and balance of the cervical spine. Korean Spinal Neurosurgery Society 2022-06 2022-06-30 /pmc/articles/PMC9260555/ /pubmed/35793937 http://dx.doi.org/10.14245/ns.2244220.110 Text en Copyright © 2022 by the Korean Spinal Neurosurgery Society https://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/ (https://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 Original Article
Lee, Jae-Koo
Hyun, Seung-Jae
Kim, Ki-Jeong
Odontoid Incidence: A Novel Cervical Parameter Influencing Cervical Alignment From Top to Bottom
title Odontoid Incidence: A Novel Cervical Parameter Influencing Cervical Alignment From Top to Bottom
title_full Odontoid Incidence: A Novel Cervical Parameter Influencing Cervical Alignment From Top to Bottom
title_fullStr Odontoid Incidence: A Novel Cervical Parameter Influencing Cervical Alignment From Top to Bottom
title_full_unstemmed Odontoid Incidence: A Novel Cervical Parameter Influencing Cervical Alignment From Top to Bottom
title_short Odontoid Incidence: A Novel Cervical Parameter Influencing Cervical Alignment From Top to Bottom
title_sort odontoid incidence: a novel cervical parameter influencing cervical alignment from top to bottom
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9260555/
https://www.ncbi.nlm.nih.gov/pubmed/35793937
http://dx.doi.org/10.14245/ns.2244220.110
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