Vertebral Bone Marrow Fat Associated With Lower Trabecular BMD and Prevalent Vertebral Fracture in Older Adults
2013
Context: Bone marrow fat (BMF) and bone mineral density (BMD) by dual x-ray energy absorptiometry (DXA) are negatively correlated. However, little is known about the association of BMF with fracture or with separate trabecular and cortical bone compartments. Objective: Our objective was to assess the relationships between vertebral BMF, BMD by quantitative computed tomography, and fracture in older adults. Design, Setting, and Participants: We conducted a cross-sectional study in the Age Gene/Environment Susceptibility-Reykjavik cohort. Main Outcome Measures: Outcomes measures included vertebral BMF (L1–L4) measured with magnetic resonance spectroscopy, quantitative computed tomography and DXA scans of the hip and spine, and DXA vertebral fracture assessments. Previous clinical fracture was determined from medical records. Results: In 257 participants without recent bone-active medication use, mean age was 79 (SD 3.1) years. Mean BMF was 53.5% ± 8.1% in men and 55.0% ± 8.4% in women. Those with prevalent ...
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