Towards a predictive simulation of brace action in adolescent idiopathic scoliosis

Vergari, Claudio; Chen, Zhuowei; Robichon, Leopold; Courtois, Isabelle; Ebermeyer, Éric; Vialle, Raphaël; Langlais, Tristan; Pietton, Raphaël; Skalli, Wafa

doi:10.1080/10255842.2020.1856373

Cited by 9 publications

(9 citation statements)

References 26 publications

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“…25,26 Other initiatives have used similar tools to theoretically predict correction and study brace biomechanics. 27,28 Clin et al 29 used a preliminary version of the FEM utilized in this study to compare 15 brace design features and passive correction mechanisms using a design of experiment approach. Features such as the position of brace opening, strap tension, pelvic extension side, lordosis design, and rigid shell shape were found to be the most influential on the simulated 3D correction.…”

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confidence: 99%

Biomechanical Effects of Thoracolumbosacral Orthosis Design Features on 3D Correction in Adolescent Idiopathic Scoliosis

Guy

Coulombe

Rigo³

et al. 2022

Spine

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Study Design. Multicenter numerical study.Objective. To biomechanically analyze and compare various passive correction features of braces, designed by several centers with diverse practices, for three-dimensional (3D) correction of adolescent idiopathic scoliosis.Summary of Background Data. A wide variety of brace designs exist, but their biomechanical effectiveness is not clearly understood. Many studies have reported brace treatment correction potential with various degrees of control, making the objective comparison of correction mechanisms difficult. A Finite Element Model simulating the immediate in-brace corrective effects has been developed and allows to comprehensively assess the biomechanics of different brace designs. Methods. Expert clinical teams (one orthotist and one orthopedist) from six centers in five countries participated in the study. For six scoliosis cases with different curve types respecting SRS criteria, the teams designed two braces according to their treatment protocol. Finite Element Model simulations were performed to compute immediate in-brace 3D correction and skin-to-brace pressures. All braces were randomized and labeled according to 21 design features derived from Society on Scoliosis Orthopaedic and Rehabilitation Treatment proposed descriptors, including positioning of pressure points, orientation of push vectors, and sagittal design. Simulated in brace 3D corrections were compared for each design feature class using ANOVAs and linear regressions (significance P r 0.05). Results. Seventy-two braces were tested, with significant variety in the design approaches. Pressure points at the apical vertebra level corrected the main thoracic curve better than more caudal locations. Braces with ventral support flattened the lumbar lordosis. Lateral and ventral skin-to-brace pressures were correlated with changes in thoracolumbar/lumbar Cobb and lumbar lordosis (r =− 0.53, r = − 0.54). Upper straps positioned above T10 corrected the main thoracic Cobb better than those placed lower. Conclusions. The corrective features of various scoliosis braces were objectively compared in a systematic approach with minimal biases and variability in test parameters, providing a better biomechanical understanding of individual passive mechanisms' contribution to 3D correction.

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confidence: 99%

Biomechanical Effects of Thoracolumbosacral Orthosis Design Features on 3D Correction in Adolescent Idiopathic Scoliosis

Guy

Coulombe

Rigo³

et al. 2022

Spine

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“…[30,31] There are also other emerging research interests, such as a new 3-dimensional classification of AIS, [32] the validation of some new classifications, [33,34] assessment methods, and finite element models of the scoliotic spine. [35][36][37][38] Table 3 Authors with publications ≥ 15 and with citations ≥ 100. Besides, based on analysis of co-cited references, the article entitled "Effects of bracing in adolescents with idiopathic scoliosis" contributed by Weinstein in 2013, has been cited the most times.…”

Section: Research Foundations and Emerging Trendsmentioning

confidence: 99%

A bibliometric review and visual analysis of orthotic treatment in adolescent idiopathic scoliosis from the Web of Science database and CiteSpace software

Luo,

Wu,

Liu

et al. 2024

Medicine

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Orthotic treatment has been the primary nonoperative treatment for patients with adolescent idiopathic scoliosis (AIS), however, no bibliometric study has been conducted in this field to date. Therefore, this study aims to analyze potential trends and new advances in the field of orthotic treatment of AIS through a bibliometric analysis and visualization study. Relevant literature included in the Web of Science database from the start of the database to the 1st month of 2023 was retrieved and analyzed using CiteSpace software (version 6.1.R6). Data on the nations, institutions, authors, journals, keywords, and cited references were collected for each publication. A total of 1005 records were included. The most productive countries and institutions were the USA and Hong Kong Polytechnic University, respectively. Spine was the most influential journal, with the highest number of citations. Hubert Labelle had the most publications, whereas Weinstein was the most cited author. The efficacy of orthotic treatment has always been at the frontier of research. Notably, changes in the quality of life after orthotic treatment, success rate or curve progression, new classification systems, and exercises have been the focus of research in recent years. This study enriches the understanding of research landscapes and key contributors in orthotic treatment for AIS.

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“…FE models of the trunk have been coupled to brace models and patient geometry for personalized brace design in the context of AIS ( Gignac et al, 2000 ; Liao et al, 2007 ; Nie et al, 2009 ). Some studies include the evaluation of the effectiveness of these techniques on large cohorts of patients ( Cobetto et al, 2017 ; Vergari et al, 2020 ; Guy et al, 2021 ).…”

Section: Related Workmentioning

confidence: 99%

Design of personalized scoliosis braces based on differentiable biomechanics—Synthetic study

Kardash

Koutras

Otaduy

2022

Front. Bioeng. Biotechnol.

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This work describes a computational methodology for the design of braces for adolescent idiopathic scoliosis. The proposed methodology relies on a personalized simulation model of the patient’s trunk, and automatically searches for the brace geometry that optimizes the trade-off between clinical improvement and patient comfort. To do this, we introduce a formulation of differentiable biomechanics of the patient’s trunk, the brace, and their interaction. We design a simulation model that is differentiable with respect to both the deformation state and the brace design parameters, and we show how this differentiable model is used for the efficient update of brace design parameters within a numerical optimization algorithm. To evaluate the proposed methodology, we have obtained trunk models with personalized geometry for five patients of adolescent idiopathic scoliosis, and we have designed Boston-type braces. In a simulation setting, the designed braces improve clinical metrics by 45% on average, under acceptable comfort conditions. In the future, the methodology can be extended beyond synthetic validation, and tested with physical braces on the actual patients.

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Towards a predictive simulation of brace action in adolescent idiopathic scoliosis

Cited by 9 publications

References 26 publications

Biomechanical Effects of Thoracolumbosacral Orthosis Design Features on 3D Correction in Adolescent Idiopathic Scoliosis

Biomechanical Effects of Thoracolumbosacral Orthosis Design Features on 3D Correction in Adolescent Idiopathic Scoliosis

A bibliometric review and visual analysis of orthotic treatment in adolescent idiopathic scoliosis from the Web of Science database and CiteSpace software

Design of personalized scoliosis braces based on differentiable biomechanics—Synthetic study

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