کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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4060317 | 1603988 | 2015 | 5 صفحه PDF | دانلود رایگان |
Vitamin E diffusion into highly cross-linked polyethylene (E-XLPE) is a method for enhancing oxidative stability of acetabular liners. The purpose of this study was to evaluate in vivo penetration of E-XLPE using radiostereometric analysis (RSA). Eighty-four hips were recruited into a prospective 10-year RSA. This is the first evaluation of the multicenter cohort after 3-years. All patients received E-XLPE liners (E1, Biomet) and porous-titanium coated cups (Regenerex, Biomet). There was no difference (P = 0.450) in median femoral head penetration into the E-XLPE liners at 3-years comparing cobalt-chrome heads (− 0.028 mm; inter-quartile range (IQR) — 0.065 to 0.047) with ceramic heads (− 0.043 mm, IQR — 0.143 to 0.042). The 3-year follow-up indicates minimal E-XLPE liner penetration regardless of head material and minimal early cup movement.
Journal: The Journal of Arthroplasty - Volume 30, Issue 7, July 2015, Pages 1260–1264