کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10431543 910218 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of hydration on mechanical anisotropy, topography and fibril organization of the osteonal lamellae
ترجمه فارسی عنوان
تأثیر هیدراتاسیون بر آنزیوتروپی مکانیکی، توپوگرافی و ساختار فیبریل لامالهای استئونال
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی پزشکی
چکیده انگلیسی
The effect of hydration on the mechanical properties of osteonal bone, in directions parallel and perpendicular to the bone axis, was studied on three length scales: (i) the mineralized fibril level (~100 nm), (ii) the lamellar level (~6 µm); and (iii) the osteon level (up to ~30 µm).We used a number of techniques, namely atomic force microscopy (AFM), nanoindentation and microindentation. The mechanical properties (stiffness, modulus and/or hardness) have been studied under dry and wet conditions. On all three length scales the mechanical properties under dry conditions were found to be higher by 30-50% compared to wet conditions. Also the mechanical anisotropy, represented by the ratio between the properties in directions parallel and perpendicular to the osteon axis (anisotropy ratio, designated here by AnR), surprisingly decreased somewhat upon hydration. AFM imaging of osteonal lamellae revealed a disappearance of the distinctive lamellar structure under wet conditions. Altogether, these results suggest that a change in mineralized fibril orientation takes place upon hydration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Biomechanics - Volume 47, Issue 2, 22 January 2014, Pages 367-372
نویسندگان
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