Study on bone mineral density and prevalence of osteoporosis in 16019 people of Han nationalities in Changchun

Objective To analyze peak bone mass and regularity of changes of bone mineral density,the BMD of 16019 people of Han nationality in Changchun was measured.Methods BMD at the one-third of distal Radius and ulna of non-dominant forearm was measured using DTX-200 BMD detector made by American Osteometer Medi Tech Corporation in 16019 objects divided into different groups on the basis of each-5year-old.The mean of BMD,T-score and bone loss rate were analyzed using SPSS 13.0.Results The peak bone mineral density in male and female was 0.625±0.109,0.506±0.058 respectively,and that was showed in the age group of 30～34.While BMD decreased gradually after 40 years.The prevalence of osteoporosis was 7.7% in male,and 6.97% in female in the age group of 50～59,that was 18.13% in male,35.97% in female in 60～69,36.41% in male,59.55% in female in 70～79,and 57.53% in male,75.56% in female in over 80 years old.Conclusion There was significant difference in the BMD in different age groups and different sex with the same age grouqs(P0.01).The prevalence of osteoporosis in female is significantly higher than that in female in different age groups(P0.01).The peak bone mineral density on this report was higher than that of Japanese and Denmark,close to that in Beijing.Difference was significant by comparing Han population in Changchun with Dai nationality of Xishuangbanna,Tibet and Dongxiang of Gansu province(P0.01).