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Research article
The effect of vertebrae rotation on the position of the aorta relative to the spine in patients with adult degenerative scoliosis
Haiying Liu
Peking University People's Hospital
Corresponding Author
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Purpose : Few study has been published for quantitative relation of the vertebrae rotation on the position of the aorta relative to spine in adult degenerative scoliosis (ADS). Thus, this study was to explore the effect of the vertebrae rotation on the position of the aorta relative to spine in patients with ADS and identify the risk factor of vertebrae rotation.
Methods : A retrospective analysis was performed for 71 patients with ADS divided into left scoliosis (LS group, 40cases) and right scoliosis (RS group, 31cases). The two group were well-matched in demographics. Apical vertebrae, Cobb angle (°), coronal displacement and thoracolumbar kyphosis (TLK) were measured on X-ray. Aorta-vertebrae angle ( α ), aorta-vertebrae distance (d) and rotation angle (γ) for each level of T12-L4 on MRI were obtained within a Cartesian coordinate system.
Results : There was no significant difference in apical vertebrae distribution between the LS and RS group, so were Cobb angle and coronal horizontal displacement distance (P˃0.05). There was no significance on mean γ of of apical vertebrae among different levels in LS group (P=0.337) and RS group (P=0.253). Pearson correlation analysis showed γ was a positively correlated to Cobb angle and coronal horizontal displacement distance (P<0.001) in both groups. There was no significant correlation between the γ and α, d, whichever the group (P˃0.05). Coronal movement was the independent risk factor of γ (P=0.003) in LS group while Cobb angle (P=0.001) and coronal horizontal movement (P=0.006) were risk factors in RS group.
Conclusion : Vertebral rotation could be calculated by Cobb angle or coronal movement without MRI in ADS. Aorta maintained a relatively normal position in patients with ADS. The surgeons should aware of this to avoid the injury of the aorta.
Keywords
adult degenerative scoliosis, vertebrae rotation, Cartesian coordinate system, left pedicle-aorta angle, left pedicle-aorta distance
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This is a preprint. It has not completed peer review.
Research article
The effect of vertebrae rotation on the position of the aorta relative to the spine in patients with adult degenerative scoliosis
Haiying Liu
Peking University People's Hospital
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
Version 1
Posted 08 Jan, 2020
No community comments so far
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Purpose : Few study has been published for quantitative relation of the vertebrae rotation on the position of the aorta relative to spine in adult degenerative scoliosis (ADS). Thus, this study was to explore the effect of the vertebrae rotation on the position of the aorta relative to spine in patients with ADS and identify the risk factor of vertebrae rotation.
Methods : A retrospective analysis was performed for 71 patients with ADS divided into left scoliosis (LS group, 40cases) and right scoliosis (RS group, 31cases). The two group were well-matched in demographics. Apical vertebrae, Cobb angle (°), coronal displacement and thoracolumbar kyphosis (TLK) were measured on X-ray. Aorta-vertebrae angle ( α ), aorta-vertebrae distance (d) and rotation angle (γ) for each level of T12-L4 on MRI were obtained within a Cartesian coordinate system.
Results : There was no significant difference in apical vertebrae distribution between the LS and RS group, so were Cobb angle and coronal horizontal displacement distance (P˃0.05). There was no significance on mean γ of of apical vertebrae among different levels in LS group (P=0.337) and RS group (P=0.253). Pearson correlation analysis showed γ was a positively correlated to Cobb angle and coronal horizontal displacement distance (P<0.001) in both groups. There was no significant correlation between the γ and α, d, whichever the group (P˃0.05). Coronal movement was the independent risk factor of γ (P=0.003) in LS group while Cobb angle (P=0.001) and coronal horizontal movement (P=0.006) were risk factors in RS group.
Conclusion : Vertebral rotation could be calculated by Cobb angle or coronal movement without MRI in ADS. Aorta maintained a relatively normal position in patients with ADS. The surgeons should aware of this to avoid the injury of the aorta.
Figure 1
Figure 2
Figure 3