292例正常人全身骨量变化的双能X线吸收法测量分析

Bone Mineral Analysis of Whole Body in 292 Normal Subjects Assessed by Dual X-ray Absorptiometry

目的了解正常人全身骨量变化。方法采用双能Ｘ线骨密度仪测量２９２例正常人，其中女性１５２人，男性１４０人；年龄１０～７９岁，每１０岁为一组进行统计分析。结果男性全身骨量、骨密度、腰椎正位骨密度峰值分别位于３０～３９、２０～３９和２０～２９少年龄组，女性峰值均位于３０～３９岁年龄组。男性各组峰值均大于女性，女性骨丢失多于男性。男性在７０～７９岁年龄组骨量有上升趋势。腰椎正位骨密度下降较全身明显。结论全身骨密度测量可反映正常人年龄性骨质丢失情况。

To understand whole body bone mineral changes in normal subjects. Methods Bone mineral was measured by dual X-ray absorptiometry (DXA) in 292 normal subjects aged 10~ 79,including 152 females and 140 males. They were divided into age-groups bydecade. Results in males,peak value ages of total bone mineral content (TBMC),total bonemineral density(TBMD),anteroposterior spine BMD(L2-4 BMD) were in the 30~39, 20~39, 20~ 29 age-groups respectively. In females, they were all in the 30~ 39 age-group. Peakvalues of TBMC,TBMD,L2-4BMD were higher in males than those in females. Loss of bonemineral for females was more pronounced than that for males. There was a tendency of increased BMD among the 70~ 79 age-group for males. Loss of L2-4 BMD was more pronounced than TBMD. Conclusions This study provides the normal bone mineral data ofwhole body for males and females,and the characteristic of changes.