کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10690535 | 1019255 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In vitro ultrasonic and mechanic characterization of the modulus of elasticity of children cortical bone
ترجمه فارسی عنوان
ویژگی های التراسونیک و مکانیکی درون انبساطی مدول کشش استخوان کورتنی کودکان
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کلمات کلیدی
سرعت موج اولتراسونیک، خواص انعطاف پذیر، اطفال، استخوان کورتیک،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
آکوستیک و فرا صوت
چکیده انگلیسی
The assessment of elastic properties in children's cortical bone is a major challenge for biomechanical engineering community, more widely for health care professionals. Even with classical clinical modalities such as X-ray tomography, MRI, and/or echography, inappropriate diagnosis can result from the lack of reference values for children bone. This study provides values for elastic properties of cortical bone in children using ultrasonic and mechanical measurements, and compares them with adult values. 18 fibula samples from 8 children (5-16 years old, mean age 10.6 years old ±4.4) were compared to 16 fibula samples from 3 elderly adults (more than 65 years old). First, the dynamic modulus of elasticity (Edyn) and Poisson's ratio (ν) are evaluated via an ultrasonic method. Second, the static modulus of elasticity (Esta) is estimated from a 3-point microbending test. The mean values of longitudinal and transverse wave velocities measured at 10 MHz for the children's samples are respectively 3.2 mm/μs (±0.5) and 1.8 mm/μs (±0.1); for the elderly adults' samples, velocities are respectively 3.5 mm/μs (±0.2) and 1.9 mm/μs (±0.09). The mean Edyn and the mean Esta for the children's samples are respectively 15.5 GPa (±3.4) and 9.1 GPa (±3.5); for the elderly adults' samples, they are respectively 16.7 GPa (±1.9) and 5.8 GPa (±2.1). Edyn, ν and Esta are in the same range for children's and elderly adults' bone without any parametric statistical difference; a ranking correlation between Edyn and Esta is shown for the first time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics - Volume 54, Issue 5, July 2014, Pages 1270-1276
Journal: Ultrasonics - Volume 54, Issue 5, July 2014, Pages 1270-1276
نویسندگان
Jean-Philippe Berteau, Cécile Baron, Martine Pithioux, Franck Launay, Patrick Chabrand, Philippe Lasaygues,