摘要
目的 测量国人髋关节髋臼指数（acetabular index,AI）和Sharp角在各个年龄组的正常值范围.方法 纳入标准：经两位放射学专家和两位小儿骨科专家鉴定为正常,曝光良好的骨盆正位X线片.排除标准：患有已知的神经肌肉性疾病,合并任何其他先天畸形,不符合T（o）nnis标准[1]的骨盆旋转或倾斜者.选取骨盆正位X线片2333例,按年龄分组.测量0～10岁儿童的AI,1岁以内按月分组,1岁之后按年分组;10岁之后测量Sharp角,10～18岁按年分组,18岁以后每10年分为一组.测量每个年龄组AI和Sharp角,统计分析得出各个年龄组的正常参考值和数值-年龄变化曲线.结果 AI出生时为28.39°,生后3个月快速下降,1岁时降为22.17°,5岁时为15.57°,10岁时降为12.80°,趋于稳定.女性AI平均比男性大1°～2°,差异有统计学意义.Sharp角10岁为46.72°,18岁时降为39.10°,之后基本在38°～39°之间波动,40岁后再次出现一定程度的下降,男女总体差异无统计学意义.结论 AI和Sharp角存在性别差异,且随年龄变化较大,临床上通过该指标评价髋臼发育情况时需要采用相同性别、相同年龄组的正常值作为参考.
Objective To define the normal reference values of acetabular index and Sharp angle through 2333 standard anterior-posterior pelvic radiographs. Methods In our study, 2333 normal anteriorposterior pelvic radiograph images with standard exposure were selected. All the images were diagnozed normal by two radiologists and two pediatricians according to the criteria of T（o）nnis. All subjects were without any neuromuscular diseases and congenital defoemity. The acetabular index was measure in the subjects between age 0 to 10 years, and the groups were divided monthly within 1 year and yearly between 1 to 10years. The Sharp angle was measure in the subjects after 10 years, and the groups were divided yearly in adolescence and decadely in adults. Normal values of each age groups and the correlation charts were completed according to statistical analysis. Results The mean acetabular index was 28.39° in neonates followed by a steep decrease in the first three months after born. It decreased to 22.17°in the 1st year, 12.80°in the 10th years and then kept constant. Acetabular index of the female was generally 1°-2°larger than that of the male with statistical significance. The mean Sharp angle was 46.72°in the 10th years, which decreased to 39.10°in the 18th years and 35.69°in elderly people. Another declination was observed after age 40.Generally no gender difference was observed. Conclusion Acetabular index and Sharp angle vary with age.They reflect a dramatic morphological change in the acetabulum before adulthood and stay constant afterwards. Gender difference is obvious in many age groups but not all. Normal reference ranges of both gender at all age groups should be considered in clinical evaluation.
出处
《中华骨科杂志》
CAS
CSCD
北大核心
2010年第8期748-753,共6页
Chinese Journal of Orthopaedics
关键词
髋臼
X线胶片
参考值
Acetabulum
X-ray film
Reference values
