Automated abdominal aortic calcification and trabecular bone score independently predict incident fracture during routine osteoporosis screening

作者：Abadi Kahsu Gebre, Marc Sim, Syed Zulqarnain Gilani, Afsah Saleem, Cassandra Smith, Didier Hans, Siobhan Reid, Barret A. Monchka, Douglas Kimelman, Mohammad Jafari Jozani, John T. Schousboe, Joshua R. Lewis, William D. Leslie · 发表于：Journal of Bone and Mineral Research · 年份：2025 · DOI：10.1093/jbmr/zjaf144 · 被引用次数：3 · 研究领域：Bone health and osteoporosis research、Parathyroid Disorders and Treatments、Hip and Femur Fractures

Abdominal aortic calcification (AAC), a marker of subclinical cardiovascular disease, has previously shown to be associated with low BMD and fracture. However, it remains unclear whether AAC is associated with trabecular bone score (TBS), a gray-level textural measure, or whether it predicts fracture risk independent of this measure. Here, we examined the cross-sectional association of AAC scored using a validated machine learning algorithm (ML-AAC24) with TBS, and their simultaneous associations with incident fractures in 7691 individuals (93.4% women) through the Manitoba BMD Registry (mean age 75.3 yr). The association between ML-AAC24 and TBS was tested using generalized linear regression. Cox proportional hazards models tested the simultaneous relationships of ML-AAC24 and TBS with incident fractures. At baseline, 41.3% of the study cohort had low (<2), 32.4% had moderate (2 to <6), and 26.3% had high (≥6) ML-AAC24. Compared to low ML-AAC24, high ML-AAC24 was associated with a 0.81% lower TBS in the multivariable-adjusted model. Independent of each other and multiple established fracture risk factors, ML-AAC24 and TBS were each associated with an increased risk of incident fractures. Specifically, high ML-AAC24 (HR 1.41, 95% CI: 1.15-1.73, compared to low ML-AAC24) and lower TBS (HR 1.13, 95% CI: 1.05-1.22, per SD decrease) were associated with increased relative hazards for any incident fracture. High ML-AAC24 and lower TBS were also associated with incident major osteo...