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2D and 3D Classification Systems for Adolescent Idiopathic Scoliosis: Clinical Implications and Technological Advances.
Orthop Surg
January 2025
Spine Surgery Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Classification systems for Adolescent Idiopathic Scoliosis (AIS) play an important role in guiding both surgical planning and conservative treatments. Traditional 2D classification systems, such as the Lenke, King and Lehnert-Schroth classifications, have been widely used for the clinical diagnosis and treatment of scoliosis. However, with the growing understanding of the three-dimensional nature of scoliosis and advancements in 3D reconstruction technologies, 3D classification systems are gaining increasing attention.
View Article and Find Full Text PDFCorrelation analysis of global sagittal alignment of the spine in cases of low-grade degenerative lumbar spondylolisthesis.
Eur Spine J
January 2025
College of Medicine, QU Health, Qatar University, Doha, Qatar.
Purpose: Disruptions in global sagittal spinal alignment can lead to changes in global sagittal spinal alignment, often manifesting as sagittal malalignment, where the trunk shifts forward. We proposed that these alignment changes are linked to degenerative lumbar spondylolisthesis (DS). The objective was to assess global spinal alignment in low-grade DS using sagittal vertical axis (SVA) classification.
View Article and Find Full Text PDFA data-driven framework for developing a unified density-modulus relationship for the human lumbar vertebral body.
J Mech Behav Biomed Mater
January 2025
Department of Mechanical Engineering, Boston University, Boston, MA 02215, USA; Center for Multiscale and Translational Mechanobiology, Boston University, Boston, MA 02215, USA; Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA.
Despite the broad agreement that bone stiffness is heavily dependent on the underlying bone density, there is no consensus on a unified relationship that applies to both cancellous and cortical compartments. Bone from the two compartments is generally assessed separately, and few mechanical test data are available for samples from the transitional regions between them. In this study, we present a data-driven framework integrating experimental testing and numerical modeling of the human lumbar vertebra through an energy balance criterion, to develop a unified density-modulus relationship across the entire vertebral body, without the necessity of differentiation between trabecular and cortical regions.
View Article and Find Full Text PDFCoronal alignment in normal individuals and moderate scoliosis: Normative values, variation with age and comparison with sagittal alignment.
Brain Spine
October 2024
Department of Spine Surgery, Strasbourg University Hospital, Strasbourg, France.
Introduction: Global coronal alignment is mainly assessed by C7 plumbline and central sacral vertical line (CSVL), pelvic obliquity and shoulder alignment. A detailed analysis is mandatory when treating spinal deformity. It remains unclear to what extent mild scoliosis influences global coronal alignment.
View Article and Find Full Text PDFThirty years later: the lingering effects of adolescent idiopathic scoliosis surgery with third-generation implants on quality of life.
Spine Deform
January 2025
Department of Spine Surgery, University Hospital of Vall d'Hebron, 129 Passeig Vall d´Hebron, 08035, Barcelona, Spain.
Purpose: To determine patient-reported clinical status in a cohort of patients operated on during adolescence for adolescent idiopathic scoliosis (AIS) using Cotrel-Dubousset instrumentation after a minimum follow-up (FU) of 25 years.
Methods: Multicentric cross-sectional observational study. We assessed the clinical status of patients using the lumbar-pain numeric rating scale (NRS), ODI, SRS-22r, SF-36, and EQ-5D-5L.
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