陕西地区正常人骨密度测量结果分析

目的：获得正常人骨密度（BMD）参数，明确不同性别、不同部位的骨峰值及骨质疏松的诊断标准，为骨质疏松症的群体防治提供科学依据。方法：采用美国Luner公司生产的DPX－IQ型双能X线骨密度测度仪（DXA），随机对陕西地区20－89岁的受试者2524人进行腰椎（L2－4）及股骨上端（Neck,Ward's,Troch)的BMD测定。结果：骨峰值男性明显高于女性，且较女性早10a，骨峰值平均在20－39岁，无明显性别差异；在任何年龄都是女性的骨量小于男性；BMD的变化与年龄增长关系密切，女性存在着与年龄因素和绝经期因素有关的骨量丢失；松质骨（腰椎和股骨上端各部位）从30岁以后，随年龄增长骨量逐渐丢失，股骨上部各部位BMD累积丢失率明显高于腰椎。结论：不同部位松质骨骨量丢失也存在着较大的差异，以股骨Ward's三角最敏感。

Analysis of bone mineral density of healthy people in Shaanxi of China

AIM To study the bone mineral density (BMD) of healthy people, to acquire the peak bone mass (PBM) of different sexes or different parts of people and the diagnosis standard of osteoporosis (OP), and to provide the scientific reference data for prevention and treatment of osteoporosis. METHODS Dual energy X ray bone mineral density was investigated randomly for 2 524 people from 20 yrs to 89 yrs in Shannxi. RESULTS The BMD was stable in 20~39 yrs oldgroup and there was no significant difference between the different sexes groups. The BMD of males was much higher than that of females and appeared 10 yrs earlier. The bone mass (BM) of females was lower than that of males in each age group. The BMD changed with the increase of age. The BM of females decreased with the increase of age and after the menopause. The BM decreased in lumbers, femoral neck and Ward's triangle after 30 yrs. The BMD in femoral neck and Ward's triangle were much lower than that in lumbers. CONCLUSION There is significant difference in BMD decrease in different parts, especially in femoral Ward's triangle.