Cortical Bone Assessment Using Ultrasonic Guided Waves: Towards a Robust Clinical Measurement

The purpose of this investigation is to determine if there are differences in the quantities of cortical bone (thickness and porosity) as well as the new parameters measured by BDAT at both forearm and leg, between patients with recent non traumatic fracture and controls. Results will be compared to the current gold standard dual-energy X-ray absorptiometry (DXA) of the hip, spine and forearm, obtained from all subjects. The BDAT device with the improved interface will be tested in a clinical environment by clinical operators on: * minimum sample size per group: 25 for cases and controls (female and male, over 50 years). * Fractured patients will be obtained at the traumatology service of Fricke Hospital (Viña del Mar) which receives about 350 patients with hip fractures per year. * Control will be obtained at the community health centers of Valparaiso in collaboration with the UV project Geropolis. DXA measurement will be done at the imaging center of the Universidad Catolica de Valparaiso (PUCV, FONDEQUIP EQM160142). Additional DXA parameters concerning muscle and fat, will be taken into account.