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本文通过对世居青藏高原(海拔3000—4000米)藏族和汉族7—18岁健康学生1460人手腕部 X 光片的分析,研究两民族在高原环境下骨发育的规律和异同。本文资料表明:高原藏族青少年手和腕部骨的发育,在时间上一般提前于高原汉族1—2年。籽骨的出现或手末节指骨的干骺愈合,两族基本一致,可作为预测月经初潮的指标。本文讨论了其差异的原因。
In this paper, we analyzed the rules and similarities and differences of the bone development of two ethnic groups in the plateau environment by analyzing the X-ray images of the wrist of 1,460 healthy students aged 7-18 years old living in the Tibetan Plateau (3000-4000 meters above sea level). The information in this paper shows that the bone and hand bones of Tibetan adolescents in the plateau develop generally in time 1-2 years in the plateau Han nationality. The appearance of sesamoid or the epiphyseal healing of the phalanges of phalanges of the hand, the two groups are basically the same, can be used as an index to predict menarche. This article discusses the reasons for the difference.