Cargando…

Analysis of Sagittal Thoracic Inlet Measures in Relation to Anterior Access to the Cervicothoracic Junction

STUDY DESIGN: Retrospective radiographic study. OBJECTIVE: The aim of this study was to define the association between thoracic inlet measures in relation to anterior access to the cervicothoracic junction. METHODS: Trauma CT scans in patients >16 years were analyzed. The projection angle (PA), d...

Descripción completa

Detalles Bibliográficos
Autor principal: Baker, Joseph F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: SAGE Publications 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10240579/
https://www.ncbi.nlm.nih.gov/pubmed/34018449
http://dx.doi.org/10.1177/21925682211005730
_version_ 1785053793156595712
author Baker, Joseph F.
author_facet Baker, Joseph F.
author_sort Baker, Joseph F.
collection PubMed
description STUDY DESIGN: Retrospective radiographic study. OBJECTIVE: The aim of this study was to define the association between thoracic inlet measures in relation to anterior access to the cervicothoracic junction. METHODS: Trauma CT scans in patients >16 years were analyzed. The projection angle (PA), defined as the angle subtended by a line along the superior endplate of the vertebral body and the line from the anterosuperior corner of the vertebral body to the manubrium, was measured at C7, T1 and T2; angles were positive if the projection was above the manubrium. Thoracic inlet angle (TIA), thoracic inlet distance (TID) and pelvic incidence (PI) were measured. RESULTS: 65 scans were assessed (33 males; mean age 47.7 years (s.d. 8.7)). The mean TIA 79.9° (s.d. 13.4°; range 52.6° – 112.2°), mean TID 66.1 mm (s.d. 6.6 mm) and mean PI was 50.5° (s.d. 10.2°). Mean values for the projection angles at C7, T1 and T2 were 24.2°, 7.6° and −8.3° respectively. PA were positive in 95% at C7, 73% at T1 and 30% at T2. PA at each level correlated significantly with age (mean r=−0.371; P = .015) and TIA (mean r=−0.916; P < .001) but neither TID nor PI. TIA correlated with age (r = 0.328; P = .008). CONCLUSIONS: The projection angles of the CTJ vertebrae are influenced by thoracic inlet angle and a lesser degree age. Understanding sagittal spinal parameters in the CTJ can aid in planning surgical strategy and approach.
format Online
Article
Text
id pubmed-10240579
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher SAGE Publications
record_format MEDLINE/PubMed
spelling pubmed-102405792023-06-06 Analysis of Sagittal Thoracic Inlet Measures in Relation to Anterior Access to the Cervicothoracic Junction Baker, Joseph F. Global Spine J Original Articles STUDY DESIGN: Retrospective radiographic study. OBJECTIVE: The aim of this study was to define the association between thoracic inlet measures in relation to anterior access to the cervicothoracic junction. METHODS: Trauma CT scans in patients >16 years were analyzed. The projection angle (PA), defined as the angle subtended by a line along the superior endplate of the vertebral body and the line from the anterosuperior corner of the vertebral body to the manubrium, was measured at C7, T1 and T2; angles were positive if the projection was above the manubrium. Thoracic inlet angle (TIA), thoracic inlet distance (TID) and pelvic incidence (PI) were measured. RESULTS: 65 scans were assessed (33 males; mean age 47.7 years (s.d. 8.7)). The mean TIA 79.9° (s.d. 13.4°; range 52.6° – 112.2°), mean TID 66.1 mm (s.d. 6.6 mm) and mean PI was 50.5° (s.d. 10.2°). Mean values for the projection angles at C7, T1 and T2 were 24.2°, 7.6° and −8.3° respectively. PA were positive in 95% at C7, 73% at T1 and 30% at T2. PA at each level correlated significantly with age (mean r=−0.371; P = .015) and TIA (mean r=−0.916; P < .001) but neither TID nor PI. TIA correlated with age (r = 0.328; P = .008). CONCLUSIONS: The projection angles of the CTJ vertebrae are influenced by thoracic inlet angle and a lesser degree age. Understanding sagittal spinal parameters in the CTJ can aid in planning surgical strategy and approach. SAGE Publications 2021-05-21 2023-04 /pmc/articles/PMC10240579/ /pubmed/34018449 http://dx.doi.org/10.1177/21925682211005730 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by-nc-nd/4.0/This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 License (https://creativecommons.org/licenses/by-nc-nd/4.0/) which permits non-commercial use, reproduction and distribution of the work as published without adaptation or alteration, without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).
spellingShingle Original Articles
Baker, Joseph F.
Analysis of Sagittal Thoracic Inlet Measures in Relation to Anterior Access to the Cervicothoracic Junction
title Analysis of Sagittal Thoracic Inlet Measures in Relation to Anterior Access to the Cervicothoracic Junction
title_full Analysis of Sagittal Thoracic Inlet Measures in Relation to Anterior Access to the Cervicothoracic Junction
title_fullStr Analysis of Sagittal Thoracic Inlet Measures in Relation to Anterior Access to the Cervicothoracic Junction
title_full_unstemmed Analysis of Sagittal Thoracic Inlet Measures in Relation to Anterior Access to the Cervicothoracic Junction
title_short Analysis of Sagittal Thoracic Inlet Measures in Relation to Anterior Access to the Cervicothoracic Junction
title_sort analysis of sagittal thoracic inlet measures in relation to anterior access to the cervicothoracic junction
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10240579/
https://www.ncbi.nlm.nih.gov/pubmed/34018449
http://dx.doi.org/10.1177/21925682211005730
work_keys_str_mv AT bakerjosephf analysisofsagittalthoracicinletmeasuresinrelationtoanterioraccesstothecervicothoracicjunction