Comparison of one-step and sequentially irradiated ultrahigh-molecular-weight polyethylene for total joint replacements

0391123 - ÚMCH 2013 RIV US eng J - Journal Article
Šlouf, Miroslav - Kotek, Jiří - Baldrian, Josef - Kovářová, Jana - Fencl, J. - Bouda, T. - Janigová, I.
Comparison of one-step and sequentially irradiated ultrahigh-molecular-weight polyethylene for total joint replacements.
Journal of Biomedical Materials Research. Part B. 101B, č. 3 (2013), s. 414-422. ISSN 1552-4973. E-ISSN 1552-4981
R&D Projects: GA TA ČR TA01011406; GA MZd NT12229
Institutional research plan: CEZ:AV0Z40500505
Keywords : polyethylene (UHMWPE) * joint replacement * mechanical properties
Subject RIV: FI - Traumatology, Orthopedics
Impact factor: 2.328, year: 2013

Structure and properties of several ultrahigh-molecular-weight polyethylenes (UHMWPEs), which were crosslinked either by standard, single-step irradiation or by newer, several-step irradiation (sequential irradiation), were compared. To verify the results, the same characterization was carried out for commercially available UHMWPE liners made of sequentially irradiated polymer (X3™, Stryker, Mahwah, NJ) and one-step irradiated polymer (denoted as PE-IMC, produced by Beznoska, Kladno, Czech Republic). The structure was studied by a number of spectroscopic, diffraction, thermal, and microscopic methods. Mechanical properties were assessed by small-punch, microhardness and, wear testing. Our results suggested that sequential irradiation followed by annealing did not lead to unusual structure at the molecular or supermolecular level. Consequently, all measured mechanical properties, including wear resistance, were comparable with one-step irradiated UHMWPEs.
Permanent Link: http://hdl.handle.net/11104/0220055