Dong Xiao-Ai, Zhao Huan, Qing Si-Han, Zheng Tao, Chen Xiao-Gang, Deng Zhen-Hua
Department of Forensic Pathology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, China.
Fa Yi Xue Za Zhi. 2013 Feb;29(1):12-6.
To estimate the chronological age of Han teenagers in Sichuan by the epiphyses development characteristics of iliac crest and ischial tuberosity in X-ray digital images.
According to TW2 classification principle, combining with the age range of our subjects and epiphyses development regularity, the degree of epiphyses development of iliac crest and ischial tuberosity had been divided into 8 grades (0-7) and 7 grades (0-6), respectively. Based on the degrees, the pelvic X-rays digital images of 691 samples of 16-20 aged teenagers were read and statistically analyzed by SPSS 19.0 software. The multiple linear regression equation was established by skeletal age (Y), development degree of iliac crest epiphyses (X1) and ischial tuberosity epiphyses (X2).
There were no statistical differences between two sides of epiphyses development of iliac crest and ischial tuberosity (P>0.05). There were no statistical difference between genders (P>0.05). The re-substitution method of the samples showed that the accuracy of equation as Y=15.269+0.444X1+0.236 X2 was high. The result of the re-substitution method showed a high accuracy of the equation.
The multiple linear regression equation could be used to identify the skeletal age for providing the scientific basis to identify the 18-year-old Han population in Sichuan.
通过X线数字影像中髂嵴和坐骨结节的骨骺发育特征，估算四川汉族青少年的骨龄。
根据TW2分类原则，结合研究对象年龄范围及骨骺发育规律，将髂嵴和坐骨结节的骨骺发育程度分别分为8个等级（0 - 7级）和7个等级（0 - 6级）。基于这些等级，对691例16 - 20岁青少年的骨盆X线数字影像进行阅片，并采用SPSS 19.0软件进行统计分析。以骨龄（Y）、髂嵴骨骺发育程度（X1）和坐骨结节骨骺发育程度（X2）建立多元线性回归方程。
髂嵴和坐骨结节骨骺发育两侧间无统计学差异（P>0.05），性别间无统计学差异（P>0.05）。样本回代法显示方程Y = 15.269 + 0.444X1 + 0.236X2的准确性较高。回代法结果显示方程准确性高。
该多元线性回归方程可用于鉴定骨龄，为四川汉族18岁人群的鉴定提供科学依据。
