Wear of Third-Generation Cross-Linked Polyethylene in Primary Total Hip Arthroplasty: A 10-Year Analysis.

Autor: Jalali O; Department of Orthopaedic Surgery, University of California, San Diego, San Diego, California., Fiske J; College of Osteopathic Medicine, Touro University California, Vallejo, California., DeJardin MG; Department of Orthopedic Research, Hoag Orthopedics, Irvine, California., Scudday TS; Department of Orthopaedic Surgery, Hoag Orthopedic Institute, Irvine, California., Barnett SL; Department of Orthopaedic Surgery, Hoag Orthopedic Institute, Irvine, California., Gorab RS; Department of Orthopaedic Surgery, Hoag Orthopedic Institute, Irvine, California.
Jazyk: angličtina
Zdroj: The Journal of arthroplasty [J Arthroplasty] 2024 May; Vol. 39 (5), pp. 1335-1340. Date of Electronic Publication: 2023 Nov 15.
DOI: 10.1016/j.arth.2023.11.016
Abstrakt: Background: Sequential modifications to the manufacturing process of highly cross-linked polyethylene (HXLPE) have improved the wear resistance and implant survival of these liners in total hip arthroplasty (THA). However, no study has examined the long-term (mean 10 year) wear rates and clinical outcomes of third-generation HXLPE in THA. The aim of our study was to report the longest-to-date analysis of wear rates and clinical outcomes of a third-generation HXLPE liner.
Methods: A series of 133 THAs using a specific HXLPE acetabular liner were retrospectively evaluated. Linear and volumetric wear rates were determined using a validated radiographic technique and clinical outcomes were analyzed. Multivariate analyses were performed to determine risk factors for accelerated wear.
Results: At a mean follow-up of 10.4 years (range, 8 to 13.4), the mean linear wear rate was 0.0172 mm/year and the mean volumetric wear rate was 16.99 mm 3 /year. There were no instances of osteolysis or mechanical failures at any time point and there was a 100% acetabular component survival rate. Younger age and use of offset liners were independent risk factors for increased wear (P < .01 for both).
Conclusions: Our series of a third-generation HXLPE demonstrated very low wear rates and excellent implant survival at a mean of 10.4 years following primary THA. Future comparative studies at the 15- and 20-year follow-up timepoints are necessary to determine if such findings translate to true improvements in the tribological properties and longevity of these liners when compared to previous generations of HXLPE liners.
(Copyright © 2023 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: