颈椎曲率指数与颈椎夹角的关系

背景如何正确评价颈椎曲率是脊柱外科医生所关注的重点.近年来,国外学者采用Ishihara法颈椎曲率指数(cervical curvature index,CCI)和颈椎(C2～7)夹角较多.目的通过应用Ishihara指数法与C2-7夹角法测量颈椎曲率,研究两种方法之间是否存在相关.设计以患者为研究对象,观察对比研究.单位北京协和医院骨科.对象2002-07/2003-07北京协和医院骨科收治的颈椎病患者63例,男34例,女29例.方法对63名颈椎病患者的侧位X射线片进行观察测量.主要观察指标主要结局①患者CCI和颈椎夹角.②CCI与颈椎夹角及年龄的关系.次要结局①CCI与颈椎夹角回归方程.②不同性别CCI及颈椎夹角的比较.结果CCI(Ishihara法)平均为10.1(SD,11.6),颈椎(C2～7)夹角平均为17.5°(SD,13.5),两种方法明显相关(P＜0.01).两种指标与患者的年龄、性别无关.结论CCI(Ishihara法)与颈椎(C2～7)夹角呈显著相关.

Relationship between cervical curvature index and cervical spine angle

BACKGROUND: How to evaluate the cervical curvature correctly has been a greatly concern of spine surgeons. In recent studies, cervical curvature index(CCI) and cervical spine angle(C2-7) were often used by foreign researchers.OBJECTIVE: Ishihara method and spine angle(C2-7) method were applied to measure the cervical curvature, and the correlation between the two methods was compared as well.DESIGN: An observational controlled trial based on the patients.SETTING: Department of Orthopaedics of Peking Union Medical College Hospital.PARTICIPANIS: Totally 63 cases including 34 male and 29 female patients with cervical spondylopathy were involved in the Department of Orthopaedics of Peking Union Medical Clooefe Hospital from July 2002 to July 2003.METHODS: The 63 cervical spondylopathy patients' cervical spine lateral X-ray films were evaluated.MAIN OUTCOME MEASURES: Main outcomes: ① The patients' CCI and the cervical spine angle; ② Relationship between their CCI and the cervical spine angle. Secondary outcomes: ① Regressive equation derived from their CCI and the cervical spine angle; ② Comparison of CCI and the cervical spine angle between male and female. RESULTS: The CCI(Ishihara method) was averaged 10. 1 (SD, 11.6), and the cervical spine angle(C2 -7) 17. 5 °(SD, 13.5). A highly significant correlation was found between the two indexes( P＜0.01). Sex and age factors were found to be irrelevant to them.CONCLUSION: The CCI (Ishihara method) and the cervical spine angle (C2-7) are significantly correlated with each other.