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目的：了解哈萨克族学龄前儿童双手腕部骨骼发育情况，探讨其发育规律，并为制定学龄前儿童骨龄标准提供科学依据，同时也为临床医学和人类学提供资料。方法：利用摄片法拍摄双手腕部Ｘ线片，共观察新生儿、３ 个月、６ 个月、１～８岁共１１个年龄组６８２ 人，并进行统计学分析。结果：得出哈萨克族学龄前儿童正常腕部骨化中心出现顺序。结论：腕部骨化中心出现男女性有区别，女性早于男性１～２ 岁。年龄范围男性大于女性。
OBJECTIVE: To understand the skeletal development of the wrist of the Kazak preschool children’s wrist and to explore its developmental rules, and to provide a scientific basis for setting the standard of skeletal age for preschool children, and also to provide information for clinical medicine and anthropology. Methods: The radiographs of both hands were taken and the newborns were observed. A total of 682 persons aged 11 months, 6 months and 1 to 8 years old were observed and statistically analyzed. Results: The order of normal wrist ossification center of Kazak preschool children was obtained. Conclusion: There are differences between male and female wrist ossification center, women older than men 1 to 2 years old. Age range is greater for males than females.