Objective To find out the changing pattern of quantitative ultrasound(QUS)with aging in urban areal in Chengdu,and to investigate the effects of body mass index(BMI)and menopause on bone strength.

• 目的了解成都市城区正常人群跟骨超声随年龄的变化,以及体重指数、绝经等对骨强度的影响。