Predicting wear of UHMWPE: Decreasing wear rate following a change in direction
نویسندگان
چکیده
منابع مشابه
Wear of retrieved UHMWPE hip liners.
After the gamma-irradiation sterilization, the most widely used orthopaedic grade polymer bearing liner material for the total joint replacement, ultra-high molecular weight polyethylene (UHMWPE), degrades through the progressive in vivo oxidation. The oxidative degradation makes UHMWPE brittle and leads to reduction of its mechanical properties. In this study, the effect of the in vivo post-ir...
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Crosslinking has been extensively introduced to reduce the wear of UHMWPE. In this study the wear rates and wear surfaces of UHMWPE with different levels of crosslinking were compared in a hip joint simulator. The UHMWPE was either non-irradiated, gamma irradiated in air (2.5MRad), or highly crosslinked (7.5 and 10MRad). The intentionally crosslinked materials showed a significantly lower volum...
متن کاملWear Properties of UHMWPE in CHARITE َ Artificial Inter-vertebral Disc
Over the past three decades more than a half a million joint replacements have been performed. Several advances have been made to the design of the implants, but despite the large success of these procedures, loosening of the components and periprosthetic osteolysys often requires a revision surgery. In looking at what causes this, the wear of the UHMWPE articulation surface and the associated ...
متن کاملPMMA Third-Body Wear after Unicondylar Knee Arthroplasty Decuples the UHMWPE Wear Particle Generation In Vitro
INTRODUCTION Overlooked polymethylmethacrylate after unicondylar knee arthroplasty can be a potential problem, since this might influence the generated wear particle size and morphology. The aim of this study was the analysis of polyethylene wear in a knee wear simulator for changes in size, morphology, and particle number after the addition of third-bodies. MATERIAL AND METHODS Fixed bearing...
متن کاملWear Reduction in Total Ankle Arthroplasty Using Highly Crosslinked UHMWPE
Introduction: Bearing couples within total ankle arthroplasty (TAA) typically utilize cobalt chromium alloys articulating on ultrahigh molecular weight polyethylene (UHMWPE). Articulation of these surfaces during in vivo loading can generate UHMWPE wear particles, which may then result in osteolysis and component loosening [1]. Osteolysis has been observed following TAA in 15-22% of patient pop...
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ژورنال
عنوان ژورنال: Wear
سال: 2011
ISSN: 0043-1648
DOI: 10.1016/j.wear.2011.06.006