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Risk Factors for Fracture Following a Fall Among Older People in Residential Care Facilities in Australia
Author(s) -
Chen Jian Sheng,
Simpson Judy M.,
March Lyn M.,
Cameron Ian D.,
Cumming Robert G.,
Lord Stephen R.,
Seibel Markus J.,
Sambrook Philip N.
Publication year - 2008
Publication title -
journal of the american geriatrics society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.992
H-Index - 232
eISSN - 1532-5415
pISSN - 0002-8614
DOI - 10.1111/j.1532-5415.2008.01954.x
Subject(s) - medicine , hip fracture , odds ratio , osteoporosis , confidence interval , anthropometry , poison control , prospective cohort study , physical therapy , demography , gerontology , surgery , emergency medicine , sociology
OBJECTIVES: To investigate which factors best predict whether a fall will result in a fracture. DESIGN: Prospective cohort. SETTING: Residential care facilities. PARTICIPANTS: One thousand three hundred forty‐two older men and women (mean age 86.0) who had a fall. MEASUREMENTS: Clinical risk factors and bone fragility by calcaneus broadband ultrasound attenuation (BUA) were assessed at baseline, and falls and fall‐related fractures were recorded for up to 2 years. All fractures were validated using X‐ray reports. RESULTS: During a median follow‐up of 1.97 years, 6,646 falls resulted in 308 fractures. Fracture rates were 6.7, 4.8, and 3.1 per 100 falls for BUA in the lowest (10.5–39.7 dB/MHz), middle (39.8–58.9 dB/MHz), and highest (≥58.9dB/MHz) tertiles, respectively. In multivariate analysis, the odds ratio for any fracture was 1.17 (95% confidence interval=1.08–1.27; P <.001) for every 10‐dB/MHz reduction in BUA. Other significant risk factors in the model were lower weight, longer leg length, better balance, no severe cognitive impairment, intermediate care residence, lack of a history of falls in the previous year, and a history of fracture since age 50. For hip fracture, the only significant risk factors were lower weight, longer leg length, intermediate care residence, and lack of falls history. CONCLUSION: Important risk factors for whether a fracture occurs immediately after a fall include direct measures of bone fragility and a number of anthropometric and clinical factors that may increase or attenuate the mechanical impact of a fall. By identifying those at highest risk of fracture after a fall, these findings should have important implications for fracture prevention strategies.

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