E Biver1, J Pepe2,3, A de Sire2,4, T Chevalley2, S Ferrari2. 1. Division of Bone Diseases, Geneva University Hospitals and Faculty of Medicine, University of Geneva, 4 Rue Gabrielle Perret-Gentil, 1205, Geneva, Switzerland. Emmanuel.Biver@hcuge.ch. 2. Division of Bone Diseases, Geneva University Hospitals and Faculty of Medicine, University of Geneva, 4 Rue Gabrielle Perret-Gentil, 1205, Geneva, Switzerland. 3. Department of Internal Medicine and Medical Disciplines, "Sapienza" University of Rome, Rome, Italy. 4. Department of Medical and Surgical Specialties and Dentistry, University of Campania "Luigi Vanvitelli", Naples, Italy.
Abstract
An exploratory study in elderly women and men from the Geneva Retirees Cohort indicates that low-frequency quantitative ultrasound measurement at the radius captures aBMD, bone size, and cortical tissue mineral density and might be used for screening purposes prior to DXA to evaluate fracture risk. INTRODUCTION: The contribution of distal radius bone mineral density (BMD) and cortical microstructure to fracture risk has recently been demonstrated. In this exploratory study, we investigated whether low-frequency quantitative ultrasound measurement at the distal radius may capture the peripheral determinants of bone fragility assessed with dual-energy X-ray absorptiometry (DXA) and high-resolution peripheral quantitative computed tomography (HR-pQCT). METHODS: Low-frequency velocity (VLF) was measured at the radius using OsCare Sono®, a portable axial transmission ultrasonometer, in 271 community-dwelling postmenopausal women and men (age 71.5 ± 1.4 years) from the Geneva Retirees Cohort. Cortical (Ct) and trabecular (Tb) volumetric (v) BMD and microstructure at the distal radius were assessed by HR-pQCT, in addition to areal (a) BMD by DXA, at the same time point. RESULTS: VLF was highly correlated with aBMD at the distal third radius (r = 0.72, p < 0.001). For microstructure parameters, the highest correlation was observed with cortical area (r = 0.59, p < 0.001). VLF also captured bone geometry (total area) and cortical tissue mineral density independently of aBMD. In models adjusted for age and sex, VLF was significantly associated with prevalent low-trauma fractures [OR 95%CI for one SD decrease of VLF 1.50 (1.05, 2.14), p = 0.024], with discrimination performance comparable to femoral neck or distal radius aBMD. CONCLUSION: Measurement of VLF at the radius captures aBMD, bone size, and cortical tissue mineral density and might be used for screening purposes prior to DXA to evaluate fracture risk.
An exploratory study in elderly women and men from the Geneva Retirees Cohort indicates that low-frequency quantitative ultrasound measurement at the radius captures aBMD, bone size, and cortical tissue mineral density and might be used for screening purposes prior to DXA to evaluate fracture risk. INTRODUCTION: The contribution of distal radius bone mineral density (BMD) and cortical microstructure to fracture risk has recently been demonstrated. In this exploratory study, we investigated whether low-frequency quantitative ultrasound measurement at the distal radius may capture the peripheral determinants of bone fragility assessed with dual-energy X-ray absorptiometry (DXA) and high-resolution peripheral quantitative computed tomography (HR-pQCT). METHODS: Low-frequency velocity (VLF) was measured at the radius using OsCare Sono®, a portable axial transmission ultrasonometer, in 271 community-dwelling postmenopausal women and men (age 71.5 ± 1.4 years) from the Geneva Retirees Cohort. Cortical (Ct) and trabecular (Tb) volumetric (v) BMD and microstructure at the distal radius were assessed by HR-pQCT, in addition to areal (a) BMD by DXA, at the same time point. RESULTS: VLF was highly correlated with aBMD at the distal third radius (r = 0.72, p < 0.001). For microstructure parameters, the highest correlation was observed with cortical area (r = 0.59, p < 0.001). VLF also captured bone geometry (total area) and cortical tissue mineral density independently of aBMD. In models adjusted for age and sex, VLF was significantly associated with prevalent low-trauma fractures [OR 95%CI for one SD decrease of VLF 1.50 (1.05, 2.14), p = 0.024], with discrimination performance comparable to femoral neck or distal radius aBMD. CONCLUSION: Measurement of VLF at the radius captures aBMD, bone size, and cortical tissue mineral density and might be used for screening purposes prior to DXA to evaluate fracture risk.
Entities:
Keywords:
Bone microstructure; Bone mineral density; Fracture; Osteoporosis; Ultrasonic low-frequency velocity
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