学龄前儿童X线骨龄测评

Skeletal Age Assement of Preschoolers Using X-Ray

目的通过X线对健康学龄前儿童手腕部骨龄测评,了解其生长发育的特点和变化趋势,制定新的学龄前儿童骨龄标准。资料与方法采用横断面调查方法,于2006年3月至2009年3月随机抽取贵州省贵阳市中心城区0～6岁学龄前儿童4404例,摄左侧手腕部正位X线平片,用TW3法测评骨成熟分(SMS)。绘制SMS趋势图,制定学龄前儿童骨龄百分位表,统计各观察骨骨化中心萌出率。结果低龄组儿童(<1岁)各组SMS差异不大。按TW3标准测评R、C系列骨龄较实际年龄大;按TW2CH标准测评C系列与实际年龄基本相符。得到R、C系列SMS百分位表。得到各观察骨骨化中心萌出率表。结论低龄组儿童进一步分组已无必要。TW3标准与国人出入较大,需要制定符合本国国情的骨龄评测标准。各观察骨骨化中心萌出情况与既往一致。

Objective To assess the skeletal age of preschoolers using X ray and to formulate a new skeletal age standard for preschoolers.Materials and Methods With method of cross sectional survey,4404 normal preschoolers at age of 0 to 6 years were selected randomly in Guiyang city from March 2006 to March 2009.Hand-wrist＇s radiographs were mensurated and skeletal maturity score（SMS）was worked out with TW3 method.SMS tendency charts were drawn and ossification centre eruption rate in different groups were calculated.Results There were no significant differences of SMS in different young groups（1 year old）.The calculated skeletal ages of R and C series with TW3 method were elder than true ages,but the calculated skeletal ages of C series with TW2CH method were similar to true ages.A percentile table of R and C series and ossification centre eruption rate table were obtained.Conclusion There was no necessity for the young children to divide into different groups.The skeletal age with TW3 method was significant different from the true age of Chinese and it was necessary to formulate a new skeletal age standard of Chinese.The situation of ossification centre eruption was similar to the previous data.