Comparative wear tests of ultra-high molecular weight polyethylene and cross-linked polyethylene.
Proc Inst Mech Eng H
; 227(5): 600-8, 2013 May.
Article
em En
| MEDLINE
| ID: mdl-23637270
ABSTRACT
Wear particle-induced osteolysis is a major concern in hip implant failure. Therefore, recent research work has focussed on wear-resistant materials, one of the most important of which is cross-linked polyethylene. In view of this, the objective of this study was to compare the in vitro wear performance of cross-linked polyethylene to traditional ultra-high molecular weight polyethylene. In order to mimic appropriate in vivo conditions, a novel high-capacity wear tester called a circularly translating pin-on-disc was used. The results of this in vitro study demonstrated that the wear rate for cross-linked polyethylene was about 80% lower than that of conventional ultra-high molecular weight polyethylene. This difference closely matches in vivo results reported in the literature for total hip replacements that use the two biopolymers. The in vitro results were also verified against ASTM F732-00 (standard test method for wear testing of polymeric materials for use in total joint prostheses). The 50-station circularly translating pin-on-disc proved to be a reliable device for in vitro wear studies of orthopaedic biopolymers.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Polietilenos
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Materiais Biocompatíveis
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Polietileno
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Reagentes de Ligações Cruzadas
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Prótese Articular
Tipo de estudo:
Evaluation_studies
Idioma:
En
Revista:
Proc Inst Mech Eng H
Assunto da revista:
ENGENHARIA BIOMEDICA
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Índia