The horizontal plane appearances of scoliosis: what information can be obtained from top-view images?

Illés, Tamás; Burkus, Máté; Somoskeőy, Szabolcs; Lauer, Fabien; Lavaste, F.; Dubousset, Jean

doi:10.1007/s00264-017-3548-5

Cited by 11 publications

(11 citation statements)

References 20 publications

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“…The use of only posteroanterior vertebral vectors in the horizontal plane provides different types of parameters regarding the impact of surgical treatment: reducing lateral deviations, achieving harmony of the curves in the sagittal plane, and reducing rotations in the horizontal plane. We can obtain information from all three planes of the spine in one image [21]. This view uniquely allows a good assessment of the 3D situation of the spine and provides useful information in daily clinical practice before and after surgical treatment; furthermore, it facilitates the understanding of the 3D nature of scoliosis.…”

Section: Discussionmentioning

confidence: 99%

Axial plane dissimilarities of two identical Lenke-type 6C scoliosis cases visualized and analyzed by vertebral vectors

et al. 2018

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Vertebral vectors allow the evolution of scoliosis curve projections in the horizontal plane before and after surgical treatment, along with representation of the entire spine. The top view in the horizontal plane is essential to completely evaluate the scoliosis curves, because, despite the similar representations in the frontal and sagittal planes, the occurrence of scoliosis in the horizontal plane can be completely different. These slides can be retrieved under Electronic Supplementary Material.

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Section: Discussionmentioning

confidence: 99%

Axial plane dissimilarities of two identical Lenke-type 6C scoliosis cases visualized and analyzed by vertebral vectors

et al. 2018

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“…Scoliosis changes the spinal column in all three anatomical planes; therefore, all of the spinopelvic parameters are affected [9]. Restoring the balance in the spinopelvic parameters is an important aspect of AIS treatment, especially for Lenke5 AIS [10].…”

Section: Discussionmentioning

confidence: 99%

The Effects of Bracing on Pelvic Parameters in Adolescent Idiopathic Scoliosis

Li¹,

Zhang²,

Wang³

et al. 2021

Preprint

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Background: This study aims to evaluate the effects of bracing on the Cobb’s angle (CA) and spinopelvic parameters in adolescent idiopathic scoliosis (AIS) patients. Methods: A total of 51 AIS patients who received bracing treatment between January 2018 and August 2019 were retrospectively analyzed. The pro-bracing and in-bracing radiographs were analyzed with regard to the spinopelvic parameters. The CA, pelvic coronal obliquity angle (PCOA), thoracolumbar kyphosis (TK), lumbar lordosis (LL), pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), sagittal vertical angle (SVA) and coronal vertical angle (CVA) were measured. Results: The mean age at the initiation of bracing was 13.6 ± 1.5 years. The mean pro-bracing CA was 24.0° ± 6.3°. There were no statistically significant differences between pro-bracing and in-bracing measurements of SVA and CVA. However, there were statistically significant differences between the pro-bracing and in-bracing measurements of the CA, PCOA, TLK, LL, PT and SS. A significant correlation was observed between PT variation and TLK variation in the sagittal plane. In the coronal plane, the PCOA variation was correlated to pro-bracing PCOA. Conclusion: Bracing effects of AIS can be extended to the pelvis. The pelvis should retro-rotate correspondingly to TLK hypokyphosis on sagittal plane, whereas in coronal plane, pelvic obliquity was improved independently.

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“…In each case, the hole spine VVs were generated with the method described by Illés et al [11] (Fig. 1).…”

Section: Methodsmentioning

confidence: 99%

“…1). The VV coordinates (x, y, z) for the initial (A) and terminal (B) points were recorded and used to calculate the projected curve angles in different anatomical planes [11]. In the axial plane, the projected axial rotations and the lateral translation from the median sagittal axis of the body of the APV were also calculated and supplemented with the calculation of the intervertebral rotation, which is the difference in axial rotation between two consecutive adjacent vertebrae.…”

Section: Methodsmentioning

confidence: 99%

Axial plane characteristics of thoracic scoliosis and their usefulness for determining the fusion levels and the correction technique

et al. 2020

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Purpose There is insufficient information regarding axial plane characteristics of scoliosis despite its 3D nature. The posterior-anterior vertebral vector (VV) has been proposed to characterize the axial plane appearances of the thoracic scoliosis. This study aimed to highlight the importance of knowledge of axial plane features when determining fusion levels and correction techniques of thoracic curves. Methods Altogether, 233 thoracic curves were analyzed using the VV after proving its usability instead of 3D angles to determine axial plane parameters such as apical vertebral (APV) axial rotations, APV lateral displacement, and intervertebral rotations (IVR). K-means clustering and regression analysis were used to identify axial plane curve patterns and determine the relationship between the coronal angles and axial plane characteristics, respectively. Results A close correlation was found between 3D angles and VV projected angles. Eight axial plane clusters were distinct, exhibiting different lateral APV displacement toward the interacetabular axis with relatively small axial rotations and a simultaneous decrease in sagittal curves. The regression analysis showed that the correlation of coronal curve magnitude was significantly stronger (r = 0.78) with APV lateral translation than with APV axial rotation (r = 0.65). Conclusion Based on these findings, the primary goal of scoliosis correction should focus on minimizing lateral translation rather than eliminating axial rotation. Knowing the IVR in the axial plane helps accurately determine the limits of the structural curves. VV-based axial views can facilitate the accurate determination of the end vertebrae and selection of the appropriate correction technique of the curve.

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The horizontal plane appearances of scoliosis: what information can be obtained from top-view images?

Cited by 11 publications

References 20 publications

Axial plane dissimilarities of two identical Lenke-type 6C scoliosis cases visualized and analyzed by vertebral vectors

Axial plane dissimilarities of two identical Lenke-type 6C scoliosis cases visualized and analyzed by vertebral vectors

The Effects of Bracing on Pelvic Parameters in Adolescent Idiopathic Scoliosis

Axial plane characteristics of thoracic scoliosis and their usefulness for determining the fusion levels and the correction technique

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