Figure 2

Typical through transmission ultrasound signals at the calcaneus measured respectively on pre and postmenopausal women with and without loading. The dash lines indicate the ultrasound signal obtained without loading exerted on calcaneus while the solid lines indicate the ultrasound signal obtained with loading exerted on calcaneus. (a) Ultrasound signals transmitting through the calcaneus measured on a typical premenopausal subject with and without loading. (b) Ultrasound signals transmitting through the calcaneus measured on a typical postmenopausal subject with and without loading.