Tamás S Illés1,2,3, Máté Burkus4, Szabolcs Somoskeőy5, Fabien Lauer6, Francois Lavaste7, Jean F Dubousset8. 1. Department of Orthopedics and Traumatology, Brugmann University Hospital, Université Libre de Bruxelles, Place Van Gehuchten 4, 1020, Brussels, Belgium. tamasilles58@gmail.com. 2. Department of Orthopedic Surgery and Traumatology, Odense University Hospital, Institute of Clinical Research, University of Southern Denmark, Odense, Denmark. tamasilles58@gmail.com. 3. National Medical Academy, Paris, France. tamasilles58@gmail.com. 4. Department of Traumatology and Hand Surgery, Petz Aladár County Teaching Hospital, Győr, Hungary. 5. Orthopedic Department, University Clinical Center, Pécs University, Pécs, Hungary. 6. LORIA, Lorraine Research Laboratory in Computer Science and its Applications, University of Lorraine, Nancy, France. 7. Institute of Biomechanics Human Georges Charpak, Arts et Metiers ParisTech, Paris, France. 8. National Medical Academy, Paris, France.
Abstract
PURPOSE: The global appearance of scoliosis in the horizontal plane is not really known. Therefore, the aims of this study were to analyze scoliosis in the horizontal plane using vertebral vectors in two patients classified with the same Lenke group, and to highlight the importance of the information obtained from these vertebral vector-based top-view images in clinical practice. METHODS: Two identical cases of scoliosis were selected, based on preoperative full-body standing anteroposterior and lateral radiographs obtained by the EOS™ 2D/3D system. Three-dimensional (3D) surface reconstructions of the spinal curves were performed by using sterEOS™ 3D software before and after surgery. In both patients, we also determined the vertebral vectors and horizontal plane coordinates for analyzing the curves mathematically before and after surgery. RESULTS: Despite the identical appearance of spinal curves in the frontal and sagittal planes, the horizontal views seemed to be significantly different. The vertebral vectors in the horizontal plane provided different types of parameters regarding scoliosis and the impact of surgical treatment: reducing lateral deviations, achieving harmony of the curves in the sagittal plane, and reducing rotations in the horizontal plane. CONCLUSIONS: Vertebral vectors allow the evolution of scoliosis curve projections in the horizontal plane before and after surgical treatment, along with representation of the entire spine. The top view in the horizontal plane is essential to completely evaluate the scoliosis curves, because, despite the similar representations in the frontal and sagittal planes, the occurrence of scoliosis in the horizontal plane can be completely different. These slides can be retrieved under Electronic Supplementary Material.
PURPOSE: The global appearance of scoliosis in the horizontal plane is not really known. Therefore, the aims of this study were to analyze scoliosis in the horizontal plane using vertebral vectors in two patients classified with the same Lenke group, and to highlight the importance of the information obtained from these vertebral vector-based top-view images in clinical practice. METHODS: Two identical cases of scoliosis were selected, based on preoperative full-body standing anteroposterior and lateral radiographs obtained by the EOS™ 2D/3D system. Three-dimensional (3D) surface reconstructions of the spinal curves were performed by using sterEOS™ 3D software before and after surgery. In both patients, we also determined the vertebral vectors and horizontal plane coordinates for analyzing the curves mathematically before and after surgery. RESULTS: Despite the identical appearance of spinal curves in the frontal and sagittal planes, the horizontal views seemed to be significantly different. The vertebral vectors in the horizontal plane provided different types of parameters regarding scoliosis and the impact of surgical treatment: reducing lateral deviations, achieving harmony of the curves in the sagittal plane, and reducing rotations in the horizontal plane. CONCLUSIONS: Vertebral vectors allow the evolution of scoliosis curve projections in the horizontal plane before and after surgical treatment, along with representation of the entire spine. The top view in the horizontal plane is essential to completely evaluate the scoliosis curves, because, despite the similar representations in the frontal and sagittal planes, the occurrence of scoliosis in the horizontal plane can be completely different. These slides can be retrieved under Electronic Supplementary Material.
Entities:
Keywords:
EOS™ 2D/3D; Horizontal plane; Scoliosis; Top view; Vertebral vector