Development of 3D kinematic model of the spine for idiopathic scoliosis simulation

This paper presents a methodology for developing kinematic model of the human scoliosis simulator using 3D models of spinal vertebrae reconstructed from point clouds. The main objectives of the work are (i) to reduce the number of spinal radiographs required for measuring idiopathic spinal deformities, the most common spine deformity (more than 80% of cases) at adolescents and (ii) improve the visualization and measurement for better treatment planning. The reconstructed 3D model is parameterized and used as a reference model for creating patient-specific anatomical models based on dimensions extracted from radiographic images (Cobb angle and dislocation of vertebrae). The methodology has been implemented and demonstrated with a case study. © 2010 CAD Solutions, LLC.