| Not yet recruiting | N/A | 1600 | Europe | Measurements with the POROUS R3C ultrasound device at the midshaft tibia, DXA measurement of the hip and lumbar spine, DXA-based Vertebral Fracture Assessment (VFA), Projectional radiography of thoracic spine (alternative to DXA-based VFA, if VFA is not available) | POROUS GmbH, European Commission | Healthy, Osteopenia, Osteoporosis | 10/28 | 03/29 | | |