Environmental Stability and Residual Stresses in Zirconia Femoral Head for Total Hip Arthroplasty: In Vitro Aging versus Retrieval Studies
Joint Authors
Takahashi, Yasuhito
Masaoka, Toshinori
Pezzotti, Giuseppe
Shishido, Takaaki
Yamamoto, Kengo
Arita, Masanori
Sano, Keiji
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-06-03
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The objective of this study was to compare the low temperature degradation (LTD) behavior of femoral heads made of 3Y-TZP as observed on retrievals with that induced in vitro upon prolonged exposures to a hydrothermal environment.
The time-dependent evolution of tetragonal-to-monoclinic transformation and the related residual stresses were nondestructively monitored by Raman microspectroscopy.
An increasing intensification of tensile and compressive stresses was detected with increasing hydrothermal aging duration in tetragonal and monoclinic phases, respectively.
The dependence of monoclinic fraction upon exposure time was rationalized through the Mehl-Avrami-Johnson (MAJ) formalism in order to interpret the LTD process according to a two-step mechanism of formation and growth of monoclinic nuclei.
In vitro results were compared to in vivo monoclinic contents in the same type of 3Y-TZP head retrievals after implantation periods of 1.6–16.6 y, also including literature data previously reported by other authors.
One-hour exposure under the selected aging condition is estimated to correspond to in vivo exposures of 4 and 2 years according to ISO and ASTM criteria, respectively.
A critical review of these two criteria according to the present analyses revealed that the ASTM simulation predicts more closely the in vivo results as compared to the ISO one.
American Psychological Association (APA)
Arita, Masanori& Takahashi, Yasuhito& Pezzotti, Giuseppe& Shishido, Takaaki& Masaoka, Toshinori& Sano, Keiji…[et al.]. 2015. Environmental Stability and Residual Stresses in Zirconia Femoral Head for Total Hip Arthroplasty: In Vitro Aging versus Retrieval Studies. BioMed Research International،Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1056232
Modern Language Association (MLA)
Arita, Masanori…[et al.]. Environmental Stability and Residual Stresses in Zirconia Femoral Head for Total Hip Arthroplasty: In Vitro Aging versus Retrieval Studies. BioMed Research International No. 2015 (2015), pp.1-9.
https://search.emarefa.net/detail/BIM-1056232
American Medical Association (AMA)
Arita, Masanori& Takahashi, Yasuhito& Pezzotti, Giuseppe& Shishido, Takaaki& Masaoka, Toshinori& Sano, Keiji…[et al.]. Environmental Stability and Residual Stresses in Zirconia Femoral Head for Total Hip Arthroplasty: In Vitro Aging versus Retrieval Studies. BioMed Research International. 2015. Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1056232
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1056232