scholarly journals Aetiological process of idiopathic scoliosis: from a normal growing spine into a complex 3D spinal deformity

2021 ◽  
Author(s):  
Tom PC Schlösser ◽  
Athanasios I. Tsirikos ◽  
René M. Castelein
Keyword(s):  
Idiopathic Scoliosis ◽  
Spinal Deformity ◽  
Growing Spine

Supine Traction Versus Prone Bending Radiographs for Assessing the Curve Flexibility in Spinal Deformity

2021 ◽  
pp. 219256822097913
Author(s):  
Niek te Hennepe ◽  
Maarten Spruit ◽  
Martin H. Pouw ◽  
Marco Hinderks ◽  
Petra Heesterbeek
Keyword(s):  
Idiopathic Scoliosis ◽  
Spinal Deformity ◽  
Retrospective Cohort ◽  
De Novo ◽  
Traction Force ◽  
Degenerative Lumbar Scoliosis ◽  
Curve Correction ◽  
Subgroup Analyses ◽  
The Difference ◽  
Side Bending

Study Design: Retrospective cohort study. Objectives: No consensus exists among surgeons on which radiologic method to prefer for the assessment of curve flexibility in spinal deformity. The objective of this study was to evaluate the difference in curve correction on supine traction radiographs versus prone side bending radiographs. Methods: A retrospective analysis of idiopathic scoliosis (IS), degenerative idiopathic scoliosis (DIS) and de novo degenerative lumbar scoliosis (DNDLS) patients was performed on supine traction as well as prone bending films (when available). Age, weight, traction force, diagnosis and Cobb angles of the primary and secondary curves were extracted. Differences in curve correction (percentages) on traction versus prone bending radiographs were analyzed for the primary and secondary curve. Subgroup analyses were performed for the 3 different diagnoses. Results: In total, 170 patients were eligible for inclusion. 43 were diagnosed with IS, 58 with DIS and 69 with DNDLS. For the primary curve, greater curve correction was obtained with bending in the DNDLS group ( P < 0.001). In the DIS group, there was a trend toward more correction on bending ( P = 0.054). In de IS group no difference was found. For the secondary curve, bending showed more curve correction in the IS and DIS group ( P = 0.002 and P <0.001). No difference was found in the DNDLS group. Conclusion: Compared to traction radiographs, bending radiographs better serve the purpose of curve flexibility assessment of IS, DIS and DNDLS spinal deformity, despite the fact that patients are exposed to more radiation.

scholarly journals Association of Circulating YKL-40 Levels and CHI3L1 Variants with the Risk of Spinal Deformity Progression in Adolescent Idiopathic Scoliosis

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Dina Nada ◽  
Cédric Julien ◽  
Pierre H. Rompré ◽  
Marie-Yvonne Akoume ◽  
Kristen F. Gorman ◽  
...  
Keyword(s):  
Adolescent Idiopathic Scoliosis ◽  
Idiopathic Scoliosis ◽  
Spinal Deformity ◽  
Deformity Progression

Body Mass Index in Adolescent Spinal Deformity: Comparison of Scheuermann's Kyphosis, Adolescent Idiopathic Scoliosis, and Normal Controls

2015 ◽  
Vol 3 (4) ◽  
pp. 318-326 ◽  
Author(s):  
Baron S. Lonner ◽  
Courtney S. Toombs ◽  
Qasim M. Husain ◽  
Paul Sponseller ◽  
Harry Shufflebarger ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Adolescent Idiopathic Scoliosis ◽  
Idiopathic Scoliosis ◽  
Body Mass ◽  
Spinal Deformity ◽  
Scheuermann’S Kyphosis ◽  
Normal Controls

scholarly journals Risks and outcomes of spinal deformity surgery in Chiari malformation, Type 1, with syringomyelia versus adolescent idiopathic scoliosis

2015 ◽  
Vol 15 (9) ◽  
pp. 2002-2008 ◽  
Author(s):  
Jakub Godzik ◽  
Terrence F. Holekamp ◽  
David D. Limbrick ◽  
Lawrence G. Lenke ◽  
T.S. Park ◽  
...  
Keyword(s):  
Adolescent Idiopathic Scoliosis ◽  
Idiopathic Scoliosis ◽  
Spinal Deformity ◽  
Chiari Malformation ◽  
Spinal Deformity Surgery ◽  
Chiari Malformation Type 1

scholarly journals Fully automatic measurements of axial vertebral rotation for assessment of spinal deformity in idiopathic scoliosis

2013 ◽  
Vol 58 (6) ◽  
pp. 1775-1787 ◽  
Author(s):  
Daniel Forsberg ◽  
Claes Lundström ◽  
Mats Andersson ◽  
Ludvig Vavruch ◽  
Hans Tropp ◽  
...  
Keyword(s):  
Idiopathic Scoliosis ◽  
Spinal Deformity ◽  
Vertebral Rotation ◽  
Axial Vertebral Rotation ◽  
Fully Automatic

scholarly journals Case-matched comparative analysis of spinal deformity correction in arthrogryposis multiplex congenita versus adolescent idiopathic scoliosis

2019 ◽  
Vol 23 (1) ◽  
pp. 22-29 ◽  
Author(s):  
Liang Xu ◽  
Zhonghui Chen ◽  
Yong Qiu ◽  
Xi Chen ◽  
Song Li ◽  
...  
Keyword(s):  
Adolescent Idiopathic Scoliosis ◽  
Blood Loss ◽  
Idiopathic Scoliosis ◽  
Spinal Deformity ◽  
Operating Time ◽  
Deformity Correction ◽  
Operation Time ◽  
Pelvic Obliquity ◽  
Arthrogryposis Multiplex Congenita ◽  
Sagittal Vertical Axis

OBJECTIVEAs scoliosis in arthrogryposis multiplex congenita (AMC) is unusual and the number of cases reviewed in previous studies is also relatively small, no previous study exists that has directly compared the results of spinal deformity correction between AMC and adolescent idiopathic scoliosis (AIS) patients. The aim of this study was to compare the radiographic and clinical outcomes of surgical correction of spinal deformity associated with AMC versus AIS.METHODSTwenty-four adolescents with AMC were matched with 48 AIS patients in terms of Cobb angle of main curve, curve pattern, sex, age at surgery, Risser grade, and length of follow-up. Patients in both groups underwent posterior-only spinal correction and fusion procedures. The surgical outcomes and complications were analyzed and compared between the 2 groups.RESULTSIn comparison to the AIS group, the AMC group had a significantly longer mean operation time (5.6 vs 4.4 hours, p = 0.002), more blood loss (1620 ± 250 ml vs 840 ± 260 ml, p < 0.001), and more fusion levels (14.1 ± 2.3 levels vs 12.4 ± 2.5 levels, p = 0.007) as well as a lower correction rate (44.3% ± 11.1% vs 70.8% ± 12.4%, p < 0.001) and a higher rate of loss of correction (5.0% ± 3.1% vs 2.1% ± 1.9%, p < 0.001). Nine patients in the AMC group had preoperative pelvic obliquity, which was corrected from a mean of 14.2° ± 8.4° to a mean of 4.3° ± 3.2° (p < 0.001) after the surgery. The thoracic lordosis and sagittal vertical axis were significantly improved in the AMC group. Notably, however, the AMC group was found to have higher rates of screw malpositioning (15.9% vs 9.5%, p = 0.002) and complications (8/24 [33.3%] vs 4/48 [8.3%], p = 0.016) as compared to the AIS group.CONCLUSIONSCorrection of AMC-associated scoliosis tends to require a longer operating time and involve more fusion levels but results in less correction, more blood loss, and more complications, in comparison with AIS. In addition, more attention should be paid to pelvic obliquity and sagittal hyperlordosis in AMC patients.

scholarly journals What causes different coronal curve patterns in idiopathic scoliosis?

2020 ◽  
Author(s):  
Saba Pasha
Keyword(s):  
Idiopathic Scoliosis ◽  
Spinal Deformity ◽  
Vertebral Rotation ◽  
Classification Systems ◽  
Axial Plane ◽  
Spinal Curvature ◽  
Group I ◽  
Plane Projection ◽  
Group Ii ◽  
Deformation Patterns

AbstractBackgroundAdolescent idiopathic scoliosis (AIS) is a three-dimensional deformity of the spinal column in otherwise healthy adolescents. The underlying mechanisms associated with the spinal deformity development have been explored which delineated the role of the sagittal curvature of the spine. The patterns of the spinal deformity vary between the AIS patients as shown in several classification systems. It remains to further investigate how variations in sagittal profiles result in different coronal plane deformities in AIS and how these deformation patterns are intrinsically different.MethodsA total of 71 Lenke 1 and 52 Lenke 5 AIS patients were included retrospectively. The 3D models of the spine were generated from biplanar radiographs to calculate the clinical spinal parameters, vertebral axial rotations, and the 3D centerline of the spinal curvature. A classification based on the centerlines’ axial plane projection was developed. The 3D curvature of the centerline was calculated at each point. A 2D elastic rod finite element model (FEM) of the sagittal spinal curvature for each axial subtype was developed to calculate the 3D deformity of the spine under gravity and axial torsion. Differences in the axial clusters’ clinical parameters, curvature of the spine, and the deformation patterns of the FEM were compared. The characteristics of the sagittal curvature of these axial clusters were determined.ResultsLenke1 was divided into two axial groups (I and II) whereas the Lenke 5 cohort all had the same axial projection pattern (loop shape). T5-T12 kyphosis was significantly different between Lenke1-Group I and the other two groups, p=0.04. The vertebral rotation in both Lenke1-Group I and Lenke 5 had only one maximum value and the FEM deformed in a loop shaped whereas Lenke1-group II showed two maximum values for vertebral rotation and the FEM of the centerline deformed in a lemniscate shape. The ratio of the spinal arc lengths above and below the sagittal inflection points for Lenke1-Groups I and II and Lenke 5 were 0.52, 1.16, and 3.24, respectively.ConclusionVariations in the axial plane projection of the curve were observed within Lenke types. Lenke 1- Group I and Lenke 5 showed similar 3D curve characteristics suggesting one 3D curve whereas Lenke1-Group II, with two 3D curves, behaved differently. The length of the spinal arcs above and below the sagittal inflection point related to the patterns of axial deformity.

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