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Retrieval analysis of Harris-Galante I and II acetabular liners in situ for more than 10 years
Journal article   Open access   Peer reviewed

Retrieval analysis of Harris-Galante I and II acetabular liners in situ for more than 10 years

Keisha French, Rebecca Moore, Heather Gawel, Steven M Kurtz, Matthew J Kraay, Ke Xie, Victor M Goldberg and Clare M Rimnac
Acta orthopaedica, v 83(4), pp 366-373
Aug 2012
DOI: https://doi.org/10.3109/17453674.2012.717843
PMID: 22880709
Featured in Collection :   UN Sustainable Development Goals @ Drexel
url
https://doi.org/10.3109/17453674.2012.717843View
Published, Version of Record (VoR)CC BY-NC V4.0,  Open

Abstract

Background and purpose There have been few reports documenting the wear and oxidation performance of the polyethylene bearing surface of HGPI and HGPII THA devices. We evaluated retrieved HGPI and HGPII acetabular liners that had been in situ for more than 10 years and determined whether there was a relationship between clinical and radiographic factors, surface damage, wear, and oxidation. Materials and methods 129 HGPI and II acetabular liners with implantation times of > 10 years were retrieved at 4 institutions between 1997 and 2010. The liners were made from a single resin and were gamma radiation-sterilized in air. Surface damage, linear wear, and oxidation index (OI) were assessed. Differences in clinical and radiographic factors, surface damage, linear wear, and OI for the 2 designs were statistically evaluated separately and together. Results Articular surface damage and backside damage was similar in the 2 designs. The linear penetration rate was 0.14 (SD 0.07) mm/year for the HGPI liners and 0.12 (SD 0.08) mm/year for the HGPII liners. For both cohorts, the rim had a higher OI than the articular surface. 74% of the liners had subsurface cracking and 24% had a complete fracture through the acetabular rim. Interpretation Despite modification of the HGP locking mechanism in the HGPII design, dissociation of the liner from the acetabular shell can still occur if fracture of the rim of the liner develops due to oxidative degradation.

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16 citations in Web of Science
19 citations in Scopus

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Web of Science research areas
Orthopedics
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