کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4060402 1603992 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reduced UHMWPE Wear Using Magnesia-Stabilized Zirconia Instead of CoCr Femoral Components in a Knee Simulator
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی ارتوپدی، پزشکی ورزشی و توانبخشی
پیش نمایش صفحه اول مقاله
Reduced UHMWPE Wear Using Magnesia-Stabilized Zirconia Instead of CoCr Femoral Components in a Knee Simulator
چکیده انگلیسی

Magnesia-stabilized zirconia (Mg-PSZ) is stable and maintains a scratch-resistant surface in hip replacement, but is untested in knees. We assessed whether using Mg-PSZ instead of cobalt-chromium (CoCr) femoral components resulted in less tibial insert wear, and evaluated changes in topography and roughness of the femoral components. Inserts bearing against CoCr or Mg-PSZ were tested using standard (9 Mc) and aggressive (6 Mc) waveforms. Femoral component surface topography and roughness were evaluated before and after testing by optical profilometry. When bearing against Mg-PSZ, UHMWPE wear rate decreased by 73% (standard) and by 59% (aggressive conditions). After 15 Mc, CoCr components featured deep scratches, and roughness increased five-fold, while Mg-PSZ components were unchanged. Mg-PSZ femoral components may be indicated for high-demand patients and those with metal sensitivity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Arthroplasty - Volume 30, Issue 3, March 2015, Pages 468–474
نویسندگان
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