Ebraheim Nabil A, Liu Jiayong, Shafiq Qaiser, Lu Jike, Pataparla Sravanthy, Yeasting Richard A, Woldenberg Lee
Department of Orthopaedic Surgery, Medical College of Ohio, Toledo, OH 43614, USA.
Spine (Phila Pa 1976). 2006 Feb 1;31(3):E62-5. doi: 10.1097/01.brs.0000199169.92242.70.
Simulated translation of the C5 vertebra was performed in 20 embalmed cadaveric cervical spines, and cross-sectional areas of the C4-C5 and C5-C6 intervertebral foramina were measured and compared before and after translation of the C5 vertebra.
To determine the relationship of cross-sectional intervertebral foraminal areas to the degrees of vertebral translation.
The common feature of clinical instability and adjacent diseases of the cervical spine is malalignment of the cervical spine (i.e., there is ventral and dorsal translation of vertebral body with respect to the adjacent upper and lower vertebral body, respectively). To our knowledge, no previous study has analyzed the quantitative effect of vertebral translation on the size of the intervertebral foramina.
The cross-sectional areas of the intervertebral foramina at C4-C5 and C5-C6 were measured on computerized tomography. The images were then transferred to the personal computer, where consecutive dorsal translations of C5 vertebrae with a 1-mm increment from 1 to 5-mm displacements were performed using Microsoft paint software (Microsoft, Corp., Redmond, WA). National Institutes of Health (Bethesda, MD) Image J software (V1.33m) was then used to measure the areas of both sides of C4-C5 and C4-C6 foramina at normal and each displacement level in the computer.
Following dorsal translation of C5 vertebra, anterolisthesis of C4 relative to C5 and retrolisthesis of C5 relative to C6 was noted. No significant difference was found between the measured values using Aquarius Image software (Microsoft, Corp.) on computerized tomography and National Institutes of Health image J software on the desktop computer (P > 0.05). When compared with normal values, there was an increase in the C4-C5 intervertebral foraminal area (i.e., 6%, 14%, 18%, 21%, and 26% with anterolisthesis of C4 relative to C5 following 1, 2, 3, 4, and 5-mm dorsal translation of the C5 vertebra, respectively). There was a 12% decrease in the C5-C6 intervertebral foraminal area, with each 1-mm incremental retrolisthesis of C5 relative to C6 vertebra. Statistically significant differences were found among residual cross-sectional foraminal areas following different degrees of dorsal translation (P < 0.05).
There is a significant increase in size with anterolisthesis and decrease in size with retrolisthesis of upper and lower adjacent vertebral intervertebral foramina, respectively.
在20具防腐处理的尸体颈椎标本上模拟C5椎体平移，测量并比较C5椎体平移前后C4 - C5和C5 - C6椎间孔的横截面积。
确定椎间孔横截面积与椎体平移程度之间的关系。
颈椎临床不稳定和相邻疾病的共同特征是颈椎排列不齐（即椎体相对于相邻上下椎体分别有腹侧和背侧平移）。据我们所知，此前尚无研究分析椎体平移对椎间孔大小的定量影响。
在计算机断层扫描上测量C4 - C5和C5 - C6椎间孔的横截面积。然后将图像传输到个人计算机，使用Microsoft paint软件（微软公司，华盛顿州雷德蒙德）对C5椎体进行从1毫米到5毫米、每次增加1毫米的连续背侧平移。然后使用美国国立卫生研究院（马里兰州贝塞斯达）的Image J软件（V1.33m）在计算机上测量正常及每个平移水平下C4 - C5和C4 - C6椎间孔两侧的面积。
C5椎体背侧平移后，观察到C4相对于C5的前滑脱以及C5相对于C6的后滑脱。计算机断层扫描上使用Aquarius Image软件（微软公司）测量的值与台式计算机上使用美国国立卫生研究院Image J软件测量的值之间未发现显著差异（P > 0.05）。与正常值相比，C4 - C5椎间孔面积增加（即C5椎体背侧平移1、2、3、4和5毫米后，C4相对于C5前滑脱时，分别增加6%、14%、18%、21%和26%）。C5相对于C6椎体每次1毫米的递增后滑脱，C5 - C6椎间孔面积减少12%。不同程度背侧平移后的残余椎间孔横截面积之间存在统计学显著差异（P < 0.05）。
相邻上下椎体椎间孔在前滑脱时面积显著增加，在后滑脱时面积减小。
