Liljenqvist U, Halm H, Hierholzer E, Drerup B, Weiland M
Klinik und Poliklinik für Allgemeine Orthopädie, Westfälischen Wilhelms-Universität Münster.
Z Orthop Ihre Grenzgeb. 1998 Jan-Feb;136(1):57-64. doi: 10.1055/s-2008-1044652.
Video rasterstereography is a method for back surface measurement comprising automatic back surface reconstruction and shape analysis. Aim of this prospective study was to determine the accuracy of this method in comparison to the conventional frontal and lateral standing radiographs.
95 patients with idiopathic scoliosis or scoliotic postural abnormalities and 18 patients with thoracic hyperkyphosis and Scheuermann's disease were investigated. The Cobb angles, the sagittal profile and apical vertebral rotation as well as pelvic obliquity and trunk decompensation were measured. The analysis was carried out by two independent observers.
The root mean square (r.m.s.) deviation of the Cobb angle in the cases of idiopathic scoliosis ranged between 7 degrees and 8 degrees. In video rasterstereography there were no false negative results and two false positive results concerning differentiation between structural scoliosis and scoliotic postural abnormality. The r.m.s. deviation of apical vertebral rotation averaged 7.9 degrees and for pelvic obliquity respectively trunk imbalance 0.65 cm respectively 1.07 cm. The thoracic hyperkyphosis in Scheuermann's disease showed a r.m.s. deviation of 5.6 degrees.
Video rasterstereography is a reliable method in the three-dimensional evaluation of spinal deformities and constitutes a valuable additional tool to the clinical examination and can reduce the number of radiographs.
视频光栅立体摄影术是一种用于后表面测量的方法，包括自动后表面重建和形状分析。这项前瞻性研究的目的是确定该方法与传统的站立位前后位和侧位X线片相比的准确性。
对95例特发性脊柱侧凸或脊柱侧凸姿势异常患者以及18例胸椎后凸和休门氏病患者进行了研究。测量了Cobb角、矢状面轮廓、顶椎旋转以及骨盆倾斜度和躯干失代偿情况。分析由两名独立观察者进行。
特发性脊柱侧凸病例中Cobb角的均方根（r.m.s.）偏差在7度至8度之间。在视频光栅立体摄影术中，关于结构性脊柱侧凸和脊柱侧凸姿势异常的鉴别没有假阴性结果，有两个假阳性结果。顶椎旋转的均方根偏差平均为7.9度，骨盆倾斜度和躯干失衡分别为0.65厘米和1.07厘米。休门氏病的胸椎后凸均方根偏差为5.6度。
视频光栅立体摄影术是脊柱畸形三维评估中的一种可靠方法，是临床检查的一种有价值的辅助工具，可减少X线片的数量。
