Development of a Model for Determining the Cobb Angle and a Method for Estimating the Curvature of the Spine in the Sagittal and Frontal Planes Based on the Motion Capture System Antilatency

Purpose of research is to develop a model for automated determination of the Cobb angle and a method for automated non-X-ray estimation of the curvature of the vertebral column in two planes: frontal and sagittal, as well as to study the kinematics of the vertebral column during walking using the motion capture technology Antilatency.

Methods. This article proposes a method for identifying adolescent idiopathic scoliosis (PIS) by using the relationship between the kinematics of the spine during walking and the progression of PIS. We also consider a model for the Trentgen-free determination of the Cobb angle. This model is designed to be used in three interrelated cases:receiving getting the dynamics of the spine after taking a few steps; 2) automating the process of finding angles in two planes - sagittal and frontal; 3) definition determination of the presence or absence of curvature of the spine in two planes. The data set for the analysis was obtained with the help of 10 volunteers as a result of their passage in the Antilatency motion capture system.

Results. The result of this work will be the ability to automatically collect data on the dynamics of the upper vertebral region, as well as the study of possible deviations in the structure of the spine, which will be the first step towards building a digital axis of the spine.

Conclusion. In this study, we considered and developed a model for searching for the Cobb angle in two planes: sagittal and frontal, a method for non-X-ray assessment of the curvature of the spine in children and adolescents from 10 to 18 years, by using the relationship between the kinematics of the spinal column during walking and the progression of adolescent idiopathic scoliosis. Data was collected from 10 volunteers. As a result of the data analysis, it was revealed that healthy people have a more pronounced dynamics of the upper vertebral region in the frontal plane than people with PIS.

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