Non-invasive methods of computer vision in the posture evaluation of adolescent idiopathic scoliosis

Aroeira, Rozilene Maria Cota; Casas, Estevam Barbosa de Las; Pertence, Antônio Eustáquio de Melo; Greco, Marcelo; Tavares, João Manuel R. S.

doi:10.1016/j.jbmt.2016.02.004

Cited by 45 publications

(26 citation statements)

References 40 publications

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“…Monitoring scoliosis, the radiographic examination in coronal and sagittal planes is essential since it allows quantifying the anatomical properties, i.e., spine curves and vertebral rotations. Moreover, several non-invasive techniques based on computer vision have been proposed to monitor the postural asymmetries related to scoliosis (Aroeira et al, 2016). Unfortunately, both the radiographic analysis and the postural exams do not provide information about biomechanical aspects, i.e., loads acting on vertebrae and intervertebral disks, which may be correlated to the risk of curve progression.…”

Section: Introductionmentioning

confidence: 99%

Semiautomated 3D Spine Reconstruction from Biplanar Radiographic Images: Prediction of Intervertebral Loading in Scoliotic Subjects

Bassani

Ottardi

Costa

et al. 2017

Front. Bioeng. Biotechnol.

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The present study proposes a semiautomatic software approach to reconstruct 3D subject-specific musculoskeletal model of thoracolumbar spine from radiographic digitized images acquired with EOS system. The approach is applied to evaluate the intervertebral loads in 38 standing adolescents with mild idiopathic scoliosis. For each vertebra, a set of landmarks was manually identified on radiographic images. The landmark coordinates were processed to calculate the following vertebral geometrical properties in the 3D space (i) location (ii) dimensions; and (iii) rotations. Spherical joints simulated disks, ligaments, and facet joints. Body weight distribution, muscles forces, and insertion points were placed according to physiological–anatomical values. Inverse static analysis, calculating joints’ reactions in maintaining assigned spine configuration, was performed with AnyBody software. Reaction forces were computed to quantify intervertebral loads, and correlation with the patient anatomical parameters was then checked. Preliminary validation was performed comparing the model outcomes with that obtained from other authors in previous modeling works and from in vivo measurements. The comparison with previous modeling works and in vivo studies partially fulfilled the preliminary validation purpose. However, minor incongruities were pointed out that need further investigations. The subjects’ intervertebral loads were found significantly correlated with the anatomical parameters in the sagittal and axial planes. Despite preliminary encouraging results that support model suitability, future investigations to consolidate the proposed approach are necessary. Nonetheless, the present method appears to be a promising tool that once fully validated could allow the subject-specific non-invasive evaluation of a deformed spine, providing supplementary information to the routine clinical examination and surgical intervention planning.

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Section: Introductionmentioning

confidence: 99%

Semiautomated 3D Spine Reconstruction from Biplanar Radiographic Images: Prediction of Intervertebral Loading in Scoliotic Subjects

Bassani

Ottardi

Costa

et al. 2017

Front. Bioeng. Biotechnol.

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“…In addition, early diagnosis of AIS can prevent excessive progression and pathological postural adaptations. In the study by Aroeira et al 19 , individuals with similar Cobb angle values may present different asymmetries throughout the body; on the other hand, significant asymmetries may be present in those with low Cobb angle values. As a consequence, there is a gap in the proposed treatment for cases of scoliosis classified as "mild"; that is, between 10 and 25 ° of Cobb value.…”

Section: Introductionmentioning

confidence: 89%

Método não ionizante de rastreamento da escoliose idiopática do adolescente em escolares

Aroeira

Leal²,

Pertence³

et al. 2019

Ciênc. saúde coletiva

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Resumo Escoliose idiopática do adolescente (EIA) atinge de 2% a 4% de jovens no Brasil. Repetidas exposições aos exames radiológicos, no acompanhamento desta deformidade, podem ser danosos à saúde. O objetivo deste estudo é apresentar um protocolo de fotogrametria, como método não ionizante para quantificação da escoliose, e relacioná-lo ao método radiológico de Cobb. Dezesseis indivíduos portadores de escoliose idiopática (21,4 ± 6,1 anos de idade e 19,8±0,2 de índice de massa corporal) foram submetidos à radiografia posteroanterior do tronco, de pé e, posteriormente, fotografia do tronco posterior, após receberem marcadores anatômicos nos processos espinhosos das vértebras C7 até L5. As imagens foram encaminhadas para análise independente de dois examinadores treinados na quantificação da escoliose para o tipo de imagem recebida. A média angular torácica de Cobb e de fotogrametria foram 36,14° e 36,43°, respectivamente. A diferença média entre os métodos foi de 4,1°. Não houve diferença estatisticamente significante (p-valor < 5%) entre eles. A fotogrametria, por ser não ionizante, ter baixo custo e ser portátil, poderá representar uma alternativa ao método radiológico. Novos estudos são necessários no aprimoramento das técnicas não ionizantes no rastreamento da EIA.

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“…Most often assessed sway parameters are those, which are easiest to measure (Błaszczyk, 2016). The directions in this plane are determined by the letters x and y, wherein x (or AP) means sways in the sagittal plane, and y (or ML) lateral deflections in the frontal plane (Aroeira et al, 2016). The most frequently analyzed and probably the most valuable parameter of posturogram is the path length of posturogram.…”

Section: Introductionmentioning

confidence: 99%

The Analysis of Selected Posturogram Parameters in Children with Scoliotic Changes

Wilczyński¹,

Habik²,

Bieniek³

et al. 2018

MAS

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The aim of the research was to analyze selected posturogram parameters in children with scoliotic changes. 28 girls aged 7-18 years old were involved in the study. Children attended to the Interschool Centre of Corrective Exercises in Starachowice. The research was conducted in June 2011. Spine research was made by Exhibeon digital radiography. Based on the size of the angle of spinal curvature there were identified scoliotic posture: 1-9° and scoliosis: ≥10°. There were 21 (75%) children with scoliotic posture, and 7 (25%) with idiopathic scoliosis. The frequency and type of defect didn't depended on age. Postural reactions were examined by static-dynamic Tecnobody's ST 310 Plus Stability System platform. Perimeter was from 539,46 with opened eyes (OE) to 759,04 with closed eyes (CE). The difference in Romberg's Test was 219,58. Ellipse area was from 447,46 with opened eyes (OE) to 850,32 with closed eyes (CE). The difference in Romberg's Test was 402,86. Perimeter ratio was 146,68, and Area ratio was 213,89. Analysis of variance showed a significant effect of study options which clearly differentiates Permeter (p=0,000008) and Ellipse Area (p=0,029882) in the research with opened and closed eyes. In a study with closed eyes it has been observed a significant increase of posturogram variables. Analysis of variance for Area ratio didn't show any significant effects (p= 0,376899) similarly for Perimeter ratio (p=0,523086). Posturogram variables generally decreased with age, however the analysis of variance didn't show any statistically significant effects. The analysis of the Spearman rank correlation of posturogram variables with age of examined persons also didn't show any significant associations.

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Non-invasive methods of computer vision in the posture evaluation of adolescent idiopathic scoliosis

Cited by 45 publications

References 40 publications

Semiautomated 3D Spine Reconstruction from Biplanar Radiographic Images: Prediction of Intervertebral Loading in Scoliotic Subjects

Semiautomated 3D Spine Reconstruction from Biplanar Radiographic Images: Prediction of Intervertebral Loading in Scoliotic Subjects

Método não ionizante de rastreamento da escoliose idiopática do adolescente em escolares

The Analysis of Selected Posturogram Parameters in Children with Scoliotic Changes

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