کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
877014 910878 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Prediction of mechanical properties of cortical bone by quantitative computed tomography
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی پزشکی
پیش نمایش صفحه اول مقاله
Prediction of mechanical properties of cortical bone by quantitative computed tomography
چکیده انگلیسی

The relevance of Finite-Element models for hip fracture prediction should be increased by the recent subject-specific methods based on computed tomography (CT-scan), regarding the geometry as well as the material properties. The present study focused on the prediction of subject-specific mechanical parameters of cortical bone (Young's modulus and ultimate strength) from the bone density measured by CT. A total of 46 compression and 46 tension samples from 13 donors (mean age ± S.D.: 81.8 ± 12.7 years) were harvested in the femoral mid-diaphysis and tested until failure. The Young's modulus and ultimate strength were linearly correlated with the bone density measured by CT, for tension as well as compression (0.43 < r2 < 0.72, p < 0.001). To take into account the remaining uncertainties on the mechanical properties prediction, the standard error of the estimate (S.E.E.) was evaluated in each case (2694–2788 MPa for Young's modulus, 13–16 MPa for ultimate strength). The significant correlations obtained in the present study and the quantification of the errors will be helpful for the assessment of the cortical mechanical properties from the CT-scan data in order to create subject-specific FE-models.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Medical Engineering & Physics - Volume 30, Issue 3, April 2008, Pages 321–328
نویسندگان
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