Low Wear at 10-Year Follow-Up of a Second-Generation Highly Cross-Linked Polyethylene in Total Hip Arthroplasty.

Autor: Sax OC; Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, MD., Douglas SJ; Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, MD., Chen Z; Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, MD., Mont MA; Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, MD., Nace J; Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, MD., Delanois RE; Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, MD.
Jazyk: angličtina
Zdroj: The Journal of arthroplasty [J Arthroplasty] 2022 Jul; Vol. 37 (7S), pp. S592-S597. Date of Electronic Publication: 2022 Feb 22.
DOI: 10.1016/j.arth.2022.01.016
Abstrakt: Background: Characterizations and factors influencing longer term performance of second-generation sequentially irradiated and annealed highly cross-linked polyethylene (HXLPE) are lacking. We evaluated patients who underwent total hip arthroplasty with HXLPE at mean 10-year follow-up for (1) linear and volumetric wear rates, (2) patient and implant characteristics, (3) implant survivorships, and (4) functional scores.
Methods: We evaluated 130 hips (110 patients) that received HXLPE acetabular liners at a single center. The mean age was 56 years (range, 20-79 years), with a mean follow-up of 10 years (range, 8-15). Radiographic linear (millimeters/year) and volumetric (cubic millimeters/year) wear rates were quantified using radiographic analysis. Survivorship was assessed by all-cause and wear-related revision rates. Functional outcomes were assessed by Short Form 12 and modified Harris Hip Scores.
Results: The mean linear wear rate was 0.02 ± 0.03 mm/y, and the mean volumetric wear rate was 12.6 ± 5.3 mm 3 /y. Younger age had higher volumetric wear (total and yearly, P = .01). Increasing body mass index trended toward higher total and yearly linear (both, P ≤ .09) and volumetric wear (both, P ≤ .07). Ten patients required revisions, with an all-cause survivorship of 92% and a wear survivorship of 100%. The mean modified Harris Hip Scores was 84, and the mean Short Form 12 scores were 46 (physical) and 55 (mental).
Conclusion: We observed low linear and volumetric wear rates for HXLPE at 10-year mean follow-up. Younger age and higher body mass index at the time of surgery may be important patient characteristics influencing long-term wear. These results illustrate the potential for this second-generation HXLPE to be an appropriate long-term total hip arthroplasty interface.
(Copyright © 2022 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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