Five-Year Experience of Vitamin E-Diffused Highly Cross-Linked Polyethylene Wear in Total Hip Arthroplasty Assessed by Radiostereometric Analysis

The Journal of Arthroplasty
Audrey K NebergallMeridith E Greene

Abstract

Vitamin E-diffused highly cross-linked polyethylene (VEPE) was developed to reduce oxidation without compromising mechanical strength. The purpose of this study was to evaluate VEPE in vivo using radiostereometric analysis (RSA) and patient-reported outcome measures (PROMs). Fifty-one hips were enrolled. Each patient received a VEPE liner, a porous titanium shell, and an uncemented stem with a 32-mm cobalt-chrome femoral head. Tantalum beads were inserted into the VEPE to measure femoral head penetration using RSA. RSA radiographs and PROMs were obtained preoperatively immediately after surgery, 6 months, 1, 2, 3, and 5 years after surgery. Forty-seven hips returned at 3 years, and 42 hip at 5 years. The mean ± standard error of the mean proximal head penetration into the polyethylene was 0.06 ± 0.01 at 5 years. The amount of head penetration did not change significantly with increasing time in vivo. The mean ± standard error of the mean Harris Hip Score was 58 ± 2 preoperatively, which improved significantly to 93 ± 2 at 5 years (P < .001). The head penetration into VEPE liners was low compared with non-VEPE at 5 years. After settling of the liners in the early period, no significant head penetration occurred from 2- to 5-year...Continue Reading

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Citations

Jul 19, 2016·Morphologie : Bulletin De L'Association Des Anatomistes·P Massin, S Achour
Sep 20, 2018·Hip International : the Journal of Clinical and Experimental Research on Hip Pathology and Therapy·Einar LindalenStephan M Röhrl
Sep 6, 2017·The Journal of Bone and Joint Surgery. American Volume·Bita ShareghiJohan Kärrholm
Dec 27, 2019·Animal : an International Journal of Animal Bioscience·T L NowlandW H E J van Wettere
Aug 5, 2017·The Bone & Joint Journal·T S BrownM P Abdel
Nov 11, 2020·Hip International : the Journal of Clinical and Experimental Research on Hip Pathology and Therapy·Kirill GromovAnders Troelsen

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