Osteoporotic fracture risk in elderly women: estimation with quantitative heel US and clinical risk factors

Details

Serval ID
serval:BIB_AE9EA72BD5B3
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Osteoporotic fracture risk in elderly women: estimation with quantitative heel US and clinical risk factors
Journal
Radiology
Author(s)
Guessous I., Cornuz J., Ruffieux C., Burckhardt P., Krieg M.A.
ISSN
1527-1315
Publication state
Published
Issued date
2008
Peer-reviewed
Oui
Volume
248
Number
1
Pages
179-184
Language
english
Abstract
PURPOSE: To derive a prediction rule by using prospectively obtained clinical and bone ultrasonographic (US) data to identify elderly women at risk for osteoporotic fractures. MATERIALS AND METHODS: The study was approved by the Swiss Ethics Committee. A prediction rule was computed by using data from a 3-year prospective multicenter study to assess the predictive value of heel-bone quantitative US in 6174 Swiss women aged 70-85 years. A quantitative US device to calculate the stiffness index at the heel was used. Baseline characteristics, known risk factors for osteoporosis and fall, and the quantitative US stiffness index were used to elaborate a predictive rule for osteoporotic fracture. Predictive values were determined by using a univariate Cox model and were adjusted with multivariate analysis. RESULTS: There were five risk factors for the incidence of osteoporotic fracture: older age (>75 years) (P < .001), low heel quantitative US stiffness index (<78%) (P < .001), history of fracture (P = .001), recent fall (P = .001), and a failed chair test (P = .029). The score points assigned to these risk factors were as follows: age, 2 (3 if age > 80 years); low quantitative US stiffness index, 5 (7.5 if stiffness index < 60%); history of fracture, 1; recent fall, 1.5; and failed chair test, 1. The cutoff value to obtain a high sensitivity (90%) was 4.5. With this cutoff, 1464 women were at lower risk (score, <4.5) and 4710 were at higher risk (score, >or=4.5) for fracture. Among the higher-risk women, 6.1% had an osteoporotic fracture, versus 1.8% of women at lower risk. Among the women who had a hip fracture, 90% were in the higher-risk group. CONCLUSION: A prediction rule obtained by using quantitative US stiffness index and four clinical risk factors helped discriminate, with high sensitivity, women at higher versus those at lower risk for osteoporotic fracture.
Keywords
Aged, Aged, 80 and over, Comorbidity, Elasticity Imaging Techniques, Female, Fractures, Bone, Fractures, Spontaneous, Heel, Humans, Incidence, Osteoporosis, Risk Assessment, Risk Factors, Switzerland, Ultrasonography
Pubmed
Web of science
Create date
22/01/2009 13:40
Last modification date
20/08/2019 15:18
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