Abstract
Background: The contribution of hip fracture to the risk of subsequent fractures is unclear. Methods: Data from the Baltimore Hip Studies and the Established Populations for Epidemiologic Studies of the Elderly (EPESE) were used. Baltimore subjects enrolled at the time of hip fracture (n=549) and EPESE subjects without previous fractures at baseline (n=10,680) were followed for 2–10 years. Self-reported nonhip skeletal fracture was the outcome, and hip fracture was a time-varying covariate in a survival analysis stratified by study site. The model was adjusted for race, sex, age, BMI, stroke, cancer, difficulty walking across a room, dependence in grooming, dependence in transferring, and cognitive impairment. Results: The rate of all subsequent self-reported fractures after hip fracture was 10.4 fractures/100 person-years. The unadjusted hazard of nonhip skeletal fracture was 2.52 (95% confidence interval 2.05 to 3.12) for subjects with hip fracture compared with subjects without; when adjusted for other known fracture risk factors the hazard ratio was 1.62 (1.30 to 2.02). Men and women had a similar relative risk increase. The increased risk of secondary fracture after hip fracture persisted over time. Conclusions: A hip fracture is associated with a 2.5-fold increased risk of subsequent fracture, which is not entirely explained by prefracture risk factors. Careful attention to secondary prevention is warranted in these patients.
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Acknowledgements
This study was supported by the Hartford/AFAR Academic Geriatric Fellowship Program, the Institute for Medical Research at the Durham VA Medical Center, The Claude A. Pepper Older American’s Independence Center AG-11268, and a Brookdale National Geriatrics Fellowship. Participants were selected from the Established Populations for Epidemiologic Studies of the Elderly, which was performed pursuant to NIA Contract Number N01-AG-1-2102, and the Baltimore Hip Studies funded by NIA R37 A609901.
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Colón-Emeric, C., Kuchibhatla, M., Pieper, C. et al. The contribution of hip fracture to risk of subsequent fractures: data from two longitudinal studies. Osteoporos Int 14, 879–883 (2003). https://doi.org/10.1007/s00198-003-1460-x
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DOI: https://doi.org/10.1007/s00198-003-1460-x