کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5032597 1471126 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of design features of tibial stems in total knee arthroplasty on tibial bone remodeling behaviors
ترجمه فارسی عنوان
تأثیر ویژگیهای طراحی ساقههای تیبیا در آرتروپلاستی کل زانو در رفتارهای بازسازی استخوان تیبیا
کلمات کلیدی
آرتروپلاستی کامل زانو، مواد درجه بندی شده عملکردی، بازسازی استخوان، تجزیه و تحلیل عنصر محدود،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی پزشکی
چکیده انگلیسی
In total knee arthroplasty, the optimal length and material of tibial stem remain controversial. This study aimed to evaluate influences of lengths and materials of cementless stems on tibial remodeling behaviors. Three groups of lengths were investigated (i.e., 110, 60, and 30 mm), and four materials (i.e., titanium, flexible 'iso-elastic' material, and two functionally graded materials [FGMs]) were selected for each group. FGM is a kind of material whose composition gradually varies in space. In this study, the compositions of two FGMs were Ti and hydroxyapatite (FGM I), and Ti and bioglass (FGM II), respectively. Tibial models were incorporated with finite element analysis to simulate bone remodeling. Distributions of bone mineral density, von Mises stress, and interface shear stress were obtained. For the length, the long stem produced more serious stress shielding and stress concentration than the short stem, but it could provide better mechanical stability. For the material, FGM I could reduce stress shielding and stress concentration and reduce the risk of loosening. Compared with the length, the material had a pronounced effect on remodeling. This study provided theoretical basis for optimal design of stem to improve service life of tibial components and to reduce pain of patients.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Medical Engineering & Physics - Volume 48, October 2017, Pages 103-113
نویسندگان
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