昆明地区2156例正常人骨矿物质含量调查

Investigation of Bone Mineral Content of 2156 Normal Subjects in Kunming

报道昆明地区1—91岁2156例正常人(男1079人,女1077人)尺桡骨矿含量(BMC)调查,结果:(1)BMC 30岁前上升,30—39岁在高峰,40岁后下降,尺、桡骨矿水平无显著差异。(2)从16岁开始,女性BMC显著低于男性,50岁以后两性差异更显。(3)青春期骨矿加速增长,女早于男,平均年增7.38％,男后来居上,年增10.69％。(4)女性绝经以后骨盐丢失加快,平均每年丢失0.83％,是男性0.27％的三倍。(5)75岁以后,女性保留骨量占峰值的74.78％,男性保留占89.14％％,差异非常显著.(6)BMC与身高、体重呈线性正相关。

THe bone mineral content (BMC) in ulna and radius of 2156 normal subjects aged from 1 to 91 years (1079males,1077 females) was measured by using single-photon absorptiometry. The results showed that 1) The BMC incrreases with age in subjects below 30 years of age and decreases with age in subjects over 40 years of age. The peak values of BMC for two sexes were in 30-39 years groups. No significant difference between BMC of ulna and that of radius was found.2) The BMC in females over 16 years of age especially over 50 years,was significantly lower than that in males (P 0.01-0.001). 3) During puberty, the bone mineralijation of girls was prior that of boys. The average rise rate of BMC in girls (7.38%) was less than that in boys (10.69%). 4) The loss of BMC in postmenopausal women was markedly increased. The average loss rateof BMC per year for women aged over 50 years (0.83%) was three times higher than that for men of the same age.5) In the old group, over 75 years of age, the men remained as high as 89% of peak valus of BMC, while women only remained of about 74%,(6) The BMC of normal subjects is linearly positively correlated with body weight and height.