学龄儿童手腕骨发育个体差异的研究

The study on skeletal maturation diversity of hand-wrist in school children

本文对7－18岁的840名汉族健康如小学生进行了手腕骨发育状况个体差异的研究。结果表明，各性别年龄组的儿童少年骨骼成熟程度均存在较明显的个体差异；60％～80％的观察对象手腕骨骨龄处于所在年龄组的骨龄均值加减1个标准差的范围内，除个别年龄外，绝大多数观察组的骨龄标准差波动在1岁左右，骨龄与时间年龄完全相符的人数不足10％。12和13岁的女孩，已发生月经初潮者比末初潮者平均骨龄领先1岁以上。本研究提示，在运用手腕骨骨龄评价学龄儿童少年骨骼发育状况时，被检者骨龄低于时间年龄2～3岁或高于时间年龄3岁左右，多数属于正常范围，是个体差异形成的落后或先进。

Based on the data from a survey in 840 Han health children aged 7 ~ 18 years old.The results show that the skeletal maturation in each sex-age group has significan individual diversity. The tariation of skeletal age in 60% ~ 80% observed object was within ± 1 standard deviation of mean value in their age group. The standard deviations vary about 1 year old in most groups, except for specific age groups. The coincidence rae of skeletal age with chronological age was not enough 10 per cent. The mean skeletal age in the clildren who have experienced menarche is earlier more 1 year than the others. The study sugysted that, while we evaluated the children skeletal mabotion utilizing the skeleta age of handwrist, the most still belong to normal range if the skeletal age was fowr 2 ~ 3 year or higher 3 year than the criterion, those due to individual diversity that cause the maturation delay or advance.