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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 evaluate the bone age of healthy pre-school children by X-ray, understand the characteristics and trends of their growth and development, and establish a new standard of bone age for preschool children. Materials and Methods By means of cross-sectional survey, 4404 pre-school children aged 0 ~ 6 years old in downtown Guiyang, Guizhou Province were selected randomly from March 2006 to March 2009, TW3 method to measure bone maturity score (SMS). Draw SMS trends, develop pre-school children bone age percentile table, statistical observation of ossification center eruption rate. Results There was no significant difference in SMS between groups of young children (<1 year old). According to TW3 standard evaluation R, C series of bone age than the actual age; according to TW2CH standard evaluation C series and the actual age of the basic line. Get R, C series of SMS percentiles. Echogenicity of each observation ossification center table. Conclusion It is no longer necessary for children in younger age groups to be further grouped. TW3 standards and people greater access, need to develop in line with their national conditions of bone age evaluation criteria. The observation of ossification center eruption situation consistent with the past.