The effect of physical loading on calcaneus quantitative ultrasound measurement: a cross-section study

BMC Musculoskeletal Disorders

De-Yu Li¹  Yu-Bo Fan¹  Lian-Wen Sun¹  Ling Wang¹  Fang Pu¹  Hai-Jun Niu¹  Cheng-Rui Liu¹ 

[1] Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, XueYuan Road No.37, Beijing, 100191, People’s Republic of China

关键词: Menopause;    Physical loading;    Osteoporosis;    Quantitative ultrasound;   

Others  :  1149865
DOI  :  10.1186/1471-2474-13-70

 received in 2011-05-22, accepted in 2012-04-17,  发布年份 2012

【 摘 要 】

Background

Physical loading leads to a deformation of bone microstructure and may influence quantitative ultrasound (QUS) parameters. This study aims at evaluating the effect of physical loading on bone QUS measurement, and further, on the potential of diagnosing osteoporosis using QUS method under physical loading condition.

Methods

16 healthy young females (control group) and 45 postmenopausal women (divided into 3 groups according to the years since menopause (YSM)) were studied. QUS parameters were measured at calcaneus under self-weight loading (standing) and no loading (sitting) conditions. Weight-normalized QUS parameter (QUS parameter measured under loading condition divided by the weight of the subject) was proposed to evaluate the influence of loading. T-test, One-Way analysis of variance (one way ANOVA) and receiver operating characteristic (ROC) analysis were applied for analysis.

Results

In QUS parameters, mainly normalized broadband ultrasound attenuation (nBUA), measured with loading significantly differed from those measured without loading (p < 0.05). The relative changes of weight-normalized QUS parameters on postmenopausal women with respect to premenopausal women under loading condition were larger than those on traditional QUS parameters measured without loading. In ROC analysis, weight-normalized QUS parameters showed their stronger discriminatory ability for menopause.

Conclusions

Physical loading substantially influenced bone QUS measurement (mainly nBUA). Weight-normalized QUS parameters can discriminate menopause more effectively. By considering the high relationship between menopause and osteoporosis, an inference was drawn that adding physical loading during measurement may be a probable way to improve the QUS based osteoporosis diagnosis.

【 授权许可】

   
2012 Liu et al.; licensee BioMed Central Ltd.

【 图 表 】

Figure 2.

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