Ho E K, Upadhyay S S, Ferris L, Chan F L, Bacon-Shone J, Hsu L C, Leong J C
Duchess of Kent Children's Hospital, Hong Kong.
Spine (Phila Pa 1976). 1992 Jul;17(7):771-4. doi: 10.1097/00007632-199207000-00008.
A comparative analysis of two methods of measuring vertebral rotation in adolescent idiopathic scoliosis is reported in this article. Nash and Moe's pedicle shift method (using plain anteroposterior radiographs) is compared with a new method using computed tomographic scans. The computed tomographic scans of the whole length of the major curve and the scout films obtained from seventeen girls aged 12.5-14 years were measured for rotation of each vertebra of the curve (total number of vertebrae measured by two methods = 173). This study has three interesting new findings: 1) Those vertebrae with Nash & Moe grade 0 had up to 11 degrees of vertebral rotation when measured using the computed tomographic method. Therefore, Nash & Moe's grade '0' is not a neutrally rotated vertebra; 2) For Nash & Moe grade 1 and 2, the computed tomographic method revealed statistically significantly greater rotation for lumbar vertebrae than thoracic vertebrae. There was a similar pattern for Nash & Moe grade 0 but these differences were not statistically significant; and 3) Simple formulae are reported to convert Nash & Moe's grades into angle of vertebral rotation as obtained by CT method separately for thoracic and lumbar vertebrae.
本文报道了青少年特发性脊柱侧凸两种测量椎体旋转方法的比较分析。将纳什和莫伊的椎弓根移位法（使用前后位平片）与一种使用计算机断层扫描的新方法进行比较。对17名年龄在12.5至14岁女孩的主弯全长计算机断层扫描图像和定位片进行测量，以确定弯曲段每个椎体的旋转情况（两种方法测量的椎体总数为173个）。本研究有三个有趣的新发现：1）使用计算机断层扫描法测量时，纳什和莫伊分级为0级的椎体有高达11度的椎体旋转。因此，纳什和莫伊的0级并非中立旋转的椎体；2）对于纳什和莫伊分级为1级和2级的情况，计算机断层扫描法显示腰椎的旋转在统计学上显著大于胸椎。纳什和莫伊分级为0级时也有类似模式，但这些差异无统计学意义；3）报告了简单公式，可分别将纳什和莫伊分级转换为通过CT法获得的胸椎和腰椎椎体旋转角度。
