Abstract
Summary
Non-hip, non-vertebral fractures (NHNVF) were compared with hip, vertebral and controls. NHNVF were younger and heavier than controls and hip/vertebral fractures in both men and women, respectively. Falls and prior fractures were less common in NHNVF than hip fractures. Glucocorticoid use was lower in NHNVF compared to vertebral fracture (VF) in men.
Introduction
Although hip fracture (HF) and vertebral fractures (VF) receive the most attention in the literature and are the targeted sites for fracture prevention, non-hip, non-vertebral fracture (NHNVF) sites account for a greater proportion of fractures than the hip or vertebrae. This study aimed to assess risk factors for NHNVF and compare them with those for HF, VF and controls.
Methods
Incident fractures during 2005–2007 for men and 1994–1996 for women were identified using computerised keyword searches of radiological reports, and controls were selected at random from electoral rolls for participation in the Geelong Osteoporosis Study. Participants aged 60+ years were included in this study.
Results
Compared to controls, men and women with NHNVF were younger (ORs, 0.90, 95 % CI 0.86–0.94; and 0.96, 0.93–0.98, respectively) and had a lower femoral neck bone mineral density (BMD) T-score (age-adjusted; difference [men] 0.383, P = 0.002; [women] 0.287, P = 0.001). Compared to HF, men and women with NHNVF were heavier (difference [men] 9.0 kg, P = 0.01; [women] 7.6 kg, P < 0.001). Heavier weight was also a risk factor for women with NHNVF compared to VF (1.03, 1.01–1.06). In men with NHNVF, falls (0.37, 0.14–0.97) and prior fractures (0.38, 0.15–0.98) were less common compared to HF; and glucocorticoid use was less common for NHNVF (0.30, 0.11–0.85) compared to VF.
Conclusions
Given the high numbers of NHNVF sustained by men and women in this study, fracture prevention strategies should focus on individuals with high risk of sustaining these types of fractures, as well as on individuals who are more likely to sustain a HF or VF.
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Acknowledgments
The study was supported by the National Health and Medical Research Council (NHMRC) Australia and Amgen Europe (GmBH); however, the funding bodies played no part in the design or conduct of the study, the collection, management, analysis and interpretation of the data or in the preparation or review of the manuscript. SLB-O is supported by an Alfred Deakin Postdoctoral Research Fellowship (2015-16).
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Holloway, K.L., Henry, M.J., Brennan-Olsen, S.L. et al. Non-hip and non-vertebral fractures: the neglected fracture sites. Osteoporos Int 27, 905–913 (2016). https://doi.org/10.1007/s00198-015-3322-8
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DOI: https://doi.org/10.1007/s00198-015-3322-8