کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1429554 987176 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of alendronate sodium-loaded UHMWPE for anti-osteolysis in orthopedic applications
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
پیش نمایش صفحه اول مقاله
Characterization of alendronate sodium-loaded UHMWPE for anti-osteolysis in orthopedic applications
چکیده انگلیسی

Ultra-high molecule weight polyethylene (UHMWPE) loaded with alendronate sodium (ALN), a potential drug to prevent debris-induced osteolysis, was developed in our previous study. This study aims to investigate the wear performance of UHMWPE–ALNs. In this study, wear test, mechanical test, differential scanning calorimetry (DSC) and contact angle test were applied to characterize the wear performance, mechanical behavior and physical properties of UHMWPE–ALNs. The effect of ALN on the wear performance of UHMWPE–ALNs was investigated by scanning electron microscope (SEM), back scattering electrons (BSE) and energy dispersive X-ray spectrum (EDX). The results of wear test showed that the friction coefficient and volumetric loss of UHMWPE–ALN 0.5 wt.% were comparable with those of UHMWPE. The result of SEM-BSE-EDX revealed that the wear debris detached easily from the ALN-agglomerated regions, which was mainly responsible for the decrease of wear resistance of UHMWPE–ALN 1.0 wt.%. The loaded ALN resulted in the increase of hydrophilicity of UHMWPE–ALNs. The decrease of toughness and crystallinity of UHMWPE–ALN 1.0 wt.% attributed to the non-uniform distribution of ALN. The UHMWPE–ALN 0.5 wt.%, in which no ALN agglomeration was observed, possessed approving mechanical properties and wear performance, might have potential clinical application to prevent the debris-induced osteolysis in prosthetic joints.


► The wear resistance, mechanical and physical properties UHMWPE–ALN 0.5 wt.% are not significantly different with those of UHMWPE.
► The hydrophilicity of UHMWPE increased after loaded ALN.
► The decrease of wear performance of UHMWPE–ALN 1.0 wt.% attributed to the non uniform distribution of ALN.
► The ALN-agglomerated region of UHMWPE–ALN 1.0 wt.% was most easily worn out during wear processing.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 32, Issue 2, 1 March 2012, Pages 83–91
نویسندگان
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