Ultrasound and bone fragility.
D015519:Bone Density / Q000502:physiology*; D002111:Calcaneus / Q000503:physiopathology; D005260:Female; D005598:Fractures, Spontaneous / Q000175:diagnosis*; D006801:Humans; D012307:Risk Factors; D014463:Ultrasonography / Q000379:methods*