青春发育期颈椎骨龄计算方法的探讨

目的探讨一种可客观、准确地计算青春发育期中国男女个体颈椎骨龄的方法。方法选择处于青春发育期的男女各90例,依据两川弘道的骨龄计算法计算腕骨骨龄,测量头颅侧位片上第三、四颈椎椎体各项测量项目。采用多元逐步回归分析得出颈椎骨龄计算方程。结果回归方程Y=-20·189+24·666X1+46·468X2+39·854X3(r=0·901)。Y为颈椎骨龄,X1为AH4/AP4,X2为AH3/AP3,X3为AH4/H4。方程的决定系数是0·81。各回归系数的均值和标准差如下:截距项=-20·19±4·89(t=-4·13,P<0·01),AH4/AP4=24·67±8·32(t=2·97,P<0·01),AH3/AP3=46·47±6·60(t=7·04,P<0·01),AH4/H4=39·85±7·04(t=5·66,P<0·01)。结论本方法计算颈椎骨龄可作为国人青春期各发育阶段的客观评估指标。

Cervical vertebral bone age during puberty

OBJECTIVE: To explore a method for objectively and accurately evaluating cervical vertebral bone age among Chinese growing subjects. METHODS: Using cephalometric and hand-wrist radiographs of 90 boys and 90 girls who were during pubertal period, we measured the third and fourth cervical vertebral bodies and calculated hand bone age using Liaokawa's method. A formula for calculating cervical vertebral bone age was determined by stepwise multiple regression analysis. RESULTS: A method for objectively evaluating cervical vertebral bone age among Chinese growing subjects during pubertal period was established. Y (Y: cervical vertebral bone age) = -20.189 + 24.666X(1) (X(1): AH(4)/AP) +46.468X(2) (X(2): AH(3)/AP(3)) +39.854X(3) (X(3): AH(4)/H) (r = 0.901). The R square of the equation was 0.81. The mean and standard deviation were as follows: constant = -20.19 +/- 4.89 (t = -4.13, P < 0.01), AH(4)/AP(4) = 24.67 +/- 8.32 (t = 2.97, P < 0.01), AH(3)/AP(3) = 46.47 +/- 6.60 (t = 7.04, P < 0.01), AH(4)/H(4) = 39.85 +/- 7.04 (t = 5.66, P < 0.01). CONCLUSIONS: This method could be used to evaluate Chinese growth stages objectively.