两种颈椎体高度测量方法对骨成熟度定量分析的影响

Quantitative evaluation of skeletal maturation by measuring cervical vertebral with two methods

目的:比较两种测量颈椎骨体高度的方法对骨成熟度定量分析的影响,旨在为更准确地判断骨成熟度提供一个客观的依据。方法:选取10～15岁患者238例,拍摄头颅定位侧位片,采用两种方法测量第3、4颈椎体高度和中部的长度,对高度和长度的比值进行统计学分析比较。结果:将椎体中部的高度定为其下缘垂线与颈椎体上下缘交点间的距离时,其比值(H3S/AP3,H4S/AP4)拟合的曲线图不能体现出均匀改变的趋势;将椎体中部的高度定为其下缘垂线与颈椎体上缘和垂足间的距离时,其比值(H3/AP3,H4/AP4)拟合的曲线图呈现出良好的均匀上升趋势。结论:以椎体下缘垂线与颈椎体上缘和垂足间的距离作为椎体的高度(H3,H4)计算出的量化值可以更准确的预测颈椎骨成熟度。

Objective：To compare the effects of two methods in quantitative evaluation of skeletal maturation by measuring cervical vertebral.Methods：The samples were selected from lateral cephalometric radiographs of 238 patients at the age of 10~15 years old.The vertebral body height and anteroposterion vertebral body length of C3 and C4 were measured with two methods,the ratios of height and width were calculated and analysed.Results：The ratio of H3S / AP3,H4S/AP4 could not show the changes of cervical vertebral body during CVM stages,but the ratio of H3 / AP3,H4/AP4 could.Conclusion：Vertebral body height H3（H4） can predict cervical vertebral maturation more accurately than H3S（H4S）.