Effects of Surface Modification and Bulk Geometry on the Biotribological Behavior of Cross-Linked Polyethylene: Wear Testing and Finite Element Analysis
Joint Authors
Tanaka, Sakae
Watanabe, Kenichi
Kyomoto, Masayuki
Saiga, Kenichi
Taketomi, Shuji
Inui, Hiroshi
Kadono, Yuho
Takatori, Yoshio
Ishihara, Kazuhiko
Moro, Toru
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-10-25
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The wear and creep deformation resistances of polymeric orthopedic bearing materials are both important for extending their longevity.
In this study, we evaluated the wear and creep deformation resistances, including backside damage, of different polyethylene (PE) materials, namely, conventional PE, cross-linked PE (CLPE), and poly(2-methacryloyloxyethylphosphorylcholine)- (PMPC-) grafted CLPE, through wear tests and finite element analysis.
The gravimetric and volumetric degrees of wear of disks (3 or 6 mm in thickness) of these materials against a cobalt-chromium-molybdenum alloy pin were examined using a multidirectional pin-on-disk tester.
Cross-linking and PMPC grafting decreased the gravimetric wear of the PE disks significantly.
The volumetric wear at the bearing surface and the volumetric penetration in the backside of the 3-mm thick PE disk were higher than those of the 6-mm thick PE disk, regardless of the bearing material.
The geometrical changes induced in the PE disks consisted of creep, because the calculated internal von Mises stress at the bearing side of all disks and that at the backside of the 3-mm thick disks exceeded their actual yield strengths.
A highly hydrated bearing surface layer, formed by PMPC grafting, and a cross-linking-strengthened substrate of adequate thickness are essential for increasing the wear and creep deformation resistances.
American Psychological Association (APA)
Watanabe, Kenichi& Kyomoto, Masayuki& Saiga, Kenichi& Taketomi, Shuji& Inui, Hiroshi& Kadono, Yuho…[et al.]. 2015. Effects of Surface Modification and Bulk Geometry on the Biotribological Behavior of Cross-Linked Polyethylene: Wear Testing and Finite Element Analysis. BioMed Research International،Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1055482
Modern Language Association (MLA)
Watanabe, Kenichi…[et al.]. Effects of Surface Modification and Bulk Geometry on the Biotribological Behavior of Cross-Linked Polyethylene: Wear Testing and Finite Element Analysis. BioMed Research International No. 2015 (2015), pp.1-10.
https://search.emarefa.net/detail/BIM-1055482
American Medical Association (AMA)
Watanabe, Kenichi& Kyomoto, Masayuki& Saiga, Kenichi& Taketomi, Shuji& Inui, Hiroshi& Kadono, Yuho…[et al.]. Effects of Surface Modification and Bulk Geometry on the Biotribological Behavior of Cross-Linked Polyethylene: Wear Testing and Finite Element Analysis. BioMed Research International. 2015. Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1055482
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1055482