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Osteoporosis International

, Volume 17, Issue 1, pp 143–149 | Cite as

Risk factors for fracture of the shafts of the tibia and fibula in older individuals

  • Jennifer L. KelseyEmail author
  • Theresa H. M. Keegan
  • Mila M. Prill
  • Charles P. QuesenberryJr.
  • Stephen Sidney
Original Article

Abstract

A case-control study to identify risk factors for fracture of the shafts of the tibia and fibula among persons 45 years of age and older was undertaken in five Northern California Kaiser Permanente Medical Centers during 1996–2001. One hundred seventy-nine cases of newly diagnosed fracture of the tibia/fibula shaft and 2,399 controls sampled from the membership lists of the same five medical centers were included. Information on potential risk factors was obtained by a standardized questionnaire administered by trained interviewers. The number of previous fractures was associated with an increased risk [adjusted odds ratio (OR) (95% confidence interval) =1.49 (1.09–2.03) per previous fracture]. Attributes known or thought to be associated with protection against loss of bone mass, including high body mass index [adjusted OR =0.82 (0.69–0.97) per 5 kg/m2 increase], having ever used thiazide diuretics or water pills for at least 1 year [adjusted OR =0.62 (0.38–1.02)], and current use of menopausal hormone therapy among females [adjusted OR =0.84 (0.53–1.32)] tended to show decreased risks. Factors generally associated with lower bone mass, such as current cigarette smoking [OR =1.55 (1.01–2.39)] and, to some extent, lack of physical activity [OR =1.31 (0.87–1.96) for the lowest quartile compared to the upper three quartiles], tended to demonstrate increased risks. The number of falls in the past year and risk factors for falls were not associated with tibia/fibula shaft fractures, and indicators of health status were weakly and inconsistently associated with risk. Thus, this study suggests that risk factors for low bone mass, but not health status or risk factors for falls, may be important in the etiology of fracture of the shaft of the tibia/fibula in older individuals.

Keywords

Epidemiology Fibula shaft fracture Osteoporosis Risk factors Tibia shaft fracture 

Notes

Acknowledgements

This study was supported by grants from the National Institute of Arthritis and Musculoskeletal Diseases (R01 AR42421 and T32 AR07588). We thank Beverly Peters and Luisa Hamilton for project management, Michael Sorel for computing and database management and Carolyn Salazar for medical record abstraction.

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Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 2005

Authors and Affiliations

  • Jennifer L. Kelsey
    • 1
    • 2
    Email author
  • Theresa H. M. Keegan
    • 1
  • Mila M. Prill
    • 1
  • Charles P. QuesenberryJr.
    • 3
  • Stephen Sidney
    • 3
  1. 1.Department of Health Research and PolicyStanford University School of MedicineStanfordUSA
  2. 2.Division of Preventive and Behavioral MedicineUniversity of Massachusetts Medical SchoolWorcesterUSA
  3. 3.Division of ResearchKaiser Permanente Medical Care ProgramOaklandUSA

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