Highly Cross-Linked Polyethylene in Total Hip and Knee Replacement: Spatial Distribution of Molecular Orientation and Shape Recovery Behavior
Joint Authors
Takahashi, Yasuhito
Masaoka, Toshinori
Pezzotti, Giuseppe
Shishido, Takaaki
Tateiwa, Toshiyuki
Kubo, Kosuke
Yamamoto, Kengo
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-08-26
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
The present study investigated effects of processing procedures on morphology of highly cross-linked and re-melted UHMWPE (XLPE) in total hip and knee arthroplasty (THA, TKA).
The shape recovery behavior was also monitored via uniaxial compression test at room temperature after non-destructive characterizations of the in-depth microstructure by confocal/polarized Raman spectroscopy.
The goal of this study was to relate the manufacturing-induced morphology to the in vivo micromechanical performance, and ultimately to explore an optimal structure in each alternative joint bearing.
It was clearly confirmed that the investigated XLPE hip and knee implants, which were produced from different orthopaedic grade resins (GUR 1050 and GUR 1020), consisted of two structural regions in the as-received states: the near-surface transitional anisotropic layer (≈100 μm thickness) and the bulk isotropic structural region.
These XLPEs exhibited a different crystalline anisotropy and molecular texture within the near-surface layers.
In addition, the knee insert showed a slightly higher efficiency of shape recovery against the applied strain over the hip liner owing to a markedly higher percentage of the bulk amorphous phase with intermolecular cross-linking.
The quantitative data presented in this study might contribute to construct manufacturing strategies for further rationalized structures as alternative bearings in THA and TKA.
American Psychological Association (APA)
Takahashi, Yasuhito& Masaoka, Toshinori& Pezzotti, Giuseppe& Shishido, Takaaki& Tateiwa, Toshiyuki& Kubo, Kosuke…[et al.]. 2014. Highly Cross-Linked Polyethylene in Total Hip and Knee Replacement: Spatial Distribution of Molecular Orientation and Shape Recovery Behavior. BioMed Research International،Vol. 2014, no. 2014, pp.1-13.
https://search.emarefa.net/detail/BIM-1016572
Modern Language Association (MLA)
Takahashi, Yasuhito…[et al.]. Highly Cross-Linked Polyethylene in Total Hip and Knee Replacement: Spatial Distribution of Molecular Orientation and Shape Recovery Behavior. BioMed Research International No. 2014 (2014), pp.1-13.
https://search.emarefa.net/detail/BIM-1016572
American Medical Association (AMA)
Takahashi, Yasuhito& Masaoka, Toshinori& Pezzotti, Giuseppe& Shishido, Takaaki& Tateiwa, Toshiyuki& Kubo, Kosuke…[et al.]. Highly Cross-Linked Polyethylene in Total Hip and Knee Replacement: Spatial Distribution of Molecular Orientation and Shape Recovery Behavior. BioMed Research International. 2014. Vol. 2014, no. 2014, pp.1-13.
https://search.emarefa.net/detail/BIM-1016572
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1016572