TITLE

Reduction of Osteolysis with Use of Marathon Cross-Linked Polyethylene

AUTHOR(S)
Bitsch, Rudi G.; Loidolt, Travis; Heisel, Christian; Ball, Scott; Schmalzried, Thomas P.
PUB. DATE
July 2008
SOURCE
Journal of Bone & Joint Surgery, American Volume;Jul2008, Vol. 90-A Issue 7, p1487
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We previously reported wear data at a minimum of two years following thirty-four total hip replacements with a Marathon cross-I inked 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 mm³/yr and 8.0 mm³/ million cycles. The Enduron polyethylene had average wear rates of 55.5 mm³/yr and 29.9 mm³/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.
ACCESSION #
33434222

 

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