The ultrasound parameters broadband ultrasound attenuation (BUA) and speed of sound (SOS) were also measured in the calcaneus. Use the software to get the third parameter (stiffness) .

• 超声测量在同一人的跟骨进行，获取超声振幅衰减(broadband ultrasound attenuatio,BUA)和超声传播速度(speed of sound,SOS)两个参数，并据机内软件自动得出第三个参数刚度(Stiffness)。