Bredow J, Oppermann J, Scheyerer M J, Gundlfinger K, Neiss W F, Budde S, Floerkemeier T, Eysel P, Beyer F
Department of Anatomy I, University Hospital of Cologne, Cologne, Germany.
Arch Orthop Trauma Surg. 2015 May;135(5):607-12. doi: 10.1007/s00402-015-2184-z. Epub 2015 Mar 7.
Radiological study.
To asses standard values, intra- and interobserver reliability and reproducibility of sacral slope (SS) and lumbar lordosis (LL) and the correlation of these parameters in patients with lumbar spinal stenosis (LSS).
Anteroposterior and lateral X-rays of the lumbar spine of 102 patients with LSS were included in this retrospective, radiologic study. Measurements of SS and LL were carried out by five examiners. Intraobserver correlation and correlation between LL and SS were calculated with Pearson's r linear correlation coefficient and intraclass correlation coefficients (ICC) were calculated for inter- and intraobserver reliability. In addition, patients were examined in subgroups with respect to previous surgery and the current therapy.
Lumbar lordosis averaged 45.6° (range 2.5°-74.9°; SD 14.2°), intraobserver correlation was between Pearson r = 0.93 and 0.98. The measurement of SS averaged 35.3° (range 13.8°-66.9°; SD 9.6°), intraobserver correlation was between Pearson r = 0.89 and 0.96. Intraobserver reliability ranged from 0.966 to 0.992 ICC in LL measurements and 0.944-0.983 ICC in SS measurements. There was an interobserver reliability ICC of 0.944 in LL and 0.990 in SS. Correlation between LL and SS averaged r = 0.79. No statistically significant differences were observed between the analyzed subgroups.
Manual measurement of LL and SS in patients with LSS on lateral radiographs is easily performed with excellent intra- and interobserver reliability. Correlation between LL and SS is very high. Differences between patients with and without previous decompression were not statistically significant.
放射学研究。
评估腰椎管狭窄症（LSS）患者的骶骨倾斜度（SS）和腰椎前凸（LL）的标准值、观察者内及观察者间的可靠性和可重复性，以及这些参数之间的相关性。
本回顾性放射学研究纳入了102例LSS患者的腰椎前后位和侧位X线片。由五名检查者对SS和LL进行测量。采用Pearson线性相关系数计算观察者内相关性以及LL与SS之间的相关性，并计算类内相关系数（ICC）以评估观察者间和观察者内的可靠性。此外，根据既往手术情况和当前治疗方法对患者进行亚组检查。
腰椎前凸平均为45.6°（范围2.5° - 74.9°；标准差14.2°），观察者内相关性在Pearson r = 0.93至0.98之间。SS测量平均值为35.3°（范围13.8° - 66.9°；标准差9.6°），观察者内相关性在Pearson r = 0.89至0.96之间。LL测量的观察者内可靠性在ICC为0.966至0.992之间，SS测量的ICC为0.944 - 0.983。LL的观察者间可靠性ICC为0.944，SS为0.990。LL与SS之间的相关性平均r = 0.79。分析的亚组之间未观察到统计学上的显著差异。
在LSS患者的侧位X线片上手动测量LL和SS操作简便，观察者内及观察者间可靠性良好。LL与SS之间的相关性非常高。既往减压患者与未减压患者之间的差异无统计学意义。
