Objective：To predict the risk of the proximal femur fracture among the old in shannxi province throught measine calcaeus. Methods：30 old cadavers shannxi province were chose, including 16 males and 14 females. We just need the right proximal femur without surrounding soft tissue and the right foot. At first, the feet are measured by quantitative ultrasound. The the soft tissue around it was stripped and calcaneus geometry was measured. The proximal femur highpoint stress. These data were taken by statistics. Results： ①All parameters of the male are higher than that of was test in mechanical model of sideway fall. ②Correlation between the femoral proximal strength and BUA（broadband ultrasound attenuation）（R2^2=0.37） is more strong than any other paratemer of QUS.The correlation formula is Y=0.143X- 4.43）. Conclusion：The correlation formula between calcaneus Qus and femur strength is Y=0.143X-4.43.
Anatomy and Clinics
Broadband ultrasound attenuation
Speed of sound