PMID: 15348836Jan 1, 1997Paper

The optimum dose of gamma radiation-heavy doses to low wear polyethylene in total hip prostheses

Journal of Materials Science. Materials in Medicine
H OonishiA Fujisawa

Abstract

Wear volume, surface area and coefficient of friction of UHMWPE cup crosslinked with gamma radiation of 0, 50, 75, 100, 125, 150 and 200 Mrad sliding against an alumina ball were measured using a sphere-on-flat reciprocating type tribology testing machine. The effects of gamma radiation were scarcely observed in coefficient of friction. The coefficient of friction under lubricated (distilled water) and non-lubricated testing conditions was 0.08 to 0.12 and 0.20 to 0.25, respectively. The wear volume of UHMWPE with radiation of 50 Mrad, 75 to 150 Mrad, and 200 Mrad was 70 to 80%, 18 to 25%, and 12 to 15%, respectively, in comparison to non-irradiated specimens. Elongation and tensile strength of UHMWPE with radiation of 100 Mrad decreased to 6%, and 50% of that without radiation, respectively. The hardness increased with increase of the radiation dose. From several kinds of tribological findings, mechanical strength tests, and studies of long-term clinical findings, it is concluded that approximately 200 Mrad is the optimum dose of gamma radiation for clinical use in total hip prostheses.

Citations

Mar 19, 2013·Journal of the Mechanical Behavior of Biomedical Materials·P S Rama Sreekanth, S Kanagaraj
Oct 11, 2014·Acta Orthopaedica·Stuart A CallaryDonald W Howie
Apr 19, 2016·Orthopedics·James D'AntonioRama Ramakrishnan
Aug 12, 2014·Clinical Orthopaedics and Related Research·Jie ShenJun Fu
Jul 13, 2002·Journal of Biomedical Materials Research·Mohammed HoseiniAntal Boldizar
Oct 20, 2000·Clinical Orthopaedics and Related Research·I C Clarke, A Gustafson
Dec 14, 2011·Clinical Orthopaedics and Related Research·James A D'AntonioRama Ramakrishnan
Jul 17, 2007·Clinical Orthopaedics and Related Research·Matias J SalinerosJoshua J Jacobs

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