Deacon P, Flood B M, Dickson R A
J Bone Joint Surg Br. 1984 Aug;66(4):509-12. doi: 10.1302/0301-620X.66B4.6746683.
Eleven articulated scoliotic spines were examined radiographically and morphometrically. Measurement of the curve on anteroposterior radiographs of the specimens gave a mean Cobb angle of 70 degrees, though true anteroposterior radiographs of the deformity revealed a mean Cobb angle of 99 degrees (41% greater). Lateral radiographs gave the erroneous impression that there was a mean kyphosis of 41 degrees while true lateral projections revealed a mean apical lordosis of 14 degrees. Morphometric measurements confirmed the presence of a lordosis at bony level, the apical vertebral bodies being significantly taller anteriorly (P less than 0.02). There were significant correlations (P less than 0.01) between the true size of the lateral scoliosis, the amount of axial rotation and the size of the apical lordosis. This study illustrates the three-dimensional nature of the deformity in scoliosis and its property of changing in character and magnitude according to the plane of radiographic projection.
对11个关节突型脊柱侧弯的脊柱进行了影像学和形态学测量。对标本前后位X线片上的弯曲度测量得出平均Cobb角为70度，不过畸形的真正前后位X线片显示平均Cobb角为99度（大41%）。侧位X线片给出了错误的印象，即平均后凸为41度，而真正的侧位投照显示平均顶椎前凸为14度。形态学测量证实了在骨水平存在前凸，顶椎椎体前部明显更高（P<0.02）。侧弯的真实侧方大小、轴向旋转量和顶椎前凸大小之间存在显著相关性（P<0.01）。本研究说明了脊柱侧弯畸形的三维性质及其根据X线投照平面在特征和程度上发生变化的特性。
