Department of Orthopedics and Traumatology, Brugmann University Hospital, Université Libre de Bruxelles, Place Van Gehuchten 4, 1020, Brussels, Belgium.
Department of Orthopedic Surgery and Traumatology, Odense University Hospital, Institute of Clinical Research, University of Southern Denmark, Odense, Denmark.
Eur Spine J. 2018 Sep;27(9):2120-2129. doi: 10.1007/s00586-018-5577-1. Epub 2018 Apr 6.
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.
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.
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.
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.
目前并不真正了解脊柱在水平面的整体外观。因此，本研究的目的是通过对分类为相同 Lenke 组的两名患者的椎体矢量进行分析，来研究脊柱在水平面的侧弯情况，并强调从基于椎体矢量的顶视图中获取信息在临床实践中的重要性。
基于 EOS™ 2D/3D 系统获得的术前全脊柱站立前后位和侧位 X 线片，选择两例相同的脊柱侧弯患者。使用 sterEOS™ 3D 软件对术前和术后脊柱曲线进行三维（3D）表面重建。在这两名患者中，我们还确定了椎体矢量和水平平面坐标，以便在术前和术后对曲线进行数学分析。
尽管脊柱在额状面和矢状面的曲线外观相同，但水平视图似乎明显不同。椎体矢量在水平面提供了有关脊柱侧弯和手术治疗影响的不同类型参数：减少侧方偏移、实现矢状面曲线的和谐以及减少水平面的旋转。
椎体矢量允许在术前和术后治疗期间评估脊柱侧弯曲线在水平面上的演变，同时还能代表整个脊柱。水平面上的顶视图对于全面评估脊柱侧弯曲线至关重要，因为尽管在额状面和矢状面的表示相似，但脊柱在水平面上的侧弯情况可能完全不同。这些幻灯片可以在电子补充材料中检索到。
