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肤纹(dermatoglyphics)中手掌轴三角(axial triradius,t)的位置可以用atd角和t距比(trira-dius Percent Distances,tPD)来衡量。本文于1980年对上海市2,200名汉族正常小儿(1～11足岁)作了调查,每岁为一个年龄组计200人,男女各100人。结果与意义:(1)本文提供了正常小儿各年龄组的轴三角指数,>1SD以上可视为病理性增大;(2)证实轴三角指数较成人为大,并有年龄特点;(3)得到公式:小儿atd角=49-年龄,即每增一岁,atd角递减1度,直至9岁起同成人(≤40°)。故不宜将9岁前的小儿atd角化为一个均值,以本公式较为合理;(4)tPD比较稳定,1～11岁为17%,12岁起成人值,为16%。
The position of the axial triradius (t) in dermatoglyphics can be measured by the ratio of atd and triad (tPD). In 1980, the survey of 2,200 normal Han children (1 to 11 feet) in Shanghai was carried out. Each year, there are 200 persons in an age group and 100 men and women in each age group. RESULTS AND CONCLUSIONS: (1) This article provides an axonotopic index for all age groups in children.> 1SD is considered pathological increase. (2) Axial trigonometry index is larger than adults and has age characteristics. (3) ) To get the formula: pediatric atd angle = 49-age, that is, with each additional one-year, atd angle decreased by 1 degree, until the age of 9 from the same age (≤ 40 °). So it is not appropriate to angle the pediatric atd before 9 years as an average value, which is more reasonable by this formula; (4) tPD is relatively stable, 1 to 11 years old is 17%, and adult age is 12%.