Reduction of Osteolysis with Use of Marathon Cross-Linked Polyethylene: A Concise Follow-up, at a Minimum of Five Years, of a Previous Report

AbstractWe previously reported wear data at a minimum of two years following thirty-four total hip replacements with a Marathon cross-linked polyethylene liner and twenty-four replacements with a conventional (gamma-sterilized-in-air) Enduron polyethylene liner. In this current study, with sequentia...

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Bibliographic Details
Published in:Journal of bone and joint surgery. American volume 2008-07, Vol.90 (7), p.1487-1491
Main Authors: Bitsch, Rudi G, Loidolt, Travis, Heisel, Christian, Ball, Scott, Schmalzried, Thomas P
Format: Article
Language:English
Subjects:
Adult
Aged
Aged, 80 and over
Arthroplasty, Replacement, Hip
Biocompatible Materials
Biological and medical sciences
Diseases of the osteoarticular system
Female
Follow-Up Studies
Humans
Joint Prosthesis
Male
Medical sciences
Middle Aged
Orthopedic surgery
Osteolysis - prevention & control
Polyethylene
Prosthesis Failure
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
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Summary:AbstractWe previously reported wear data at a minimum of two years following thirty-four total hip replacements with a Marathon cross-linked polyethylene liner and twenty-four replacements with a conventional (gamma-sterilized-in-air) Enduron polyethylene liner. In this current study, with sequential five-year radiographs, wear rates were determined with use of linear regression analysis. The Marathon polyethylene had average wear rates of 15.4 mm/yr and 8.0 mm/million cycles. The Enduron polyethylene had average wear rates of 55.5 mm/yr and 29.9 mm/million cycles. The adjusted volumetric wear rate of the Marathon polyethylene was 73% lower than that of the Enduron polyethylene (p = 0.001). Osteolysis developed in eight of the twenty-four hips with an Enduron liner but was not apparent in any hip with a Marathon liner.Level of EvidenceTherapeutic Level III. See Instructions to Authors for a complete description of levels of evidence.
ISSN:0021-9355
1535-1386
DOI:10.2106/JBJS.F.00991