Does metal transfer affect the tribological behaviour of femoral heads? Roughness and phase transformation analyses on retrieved zirconia and Biolox® Delta composites

2016 ◽  
Vol 92 ◽  
pp. 290-298 ◽  
Author(s):  
Saverio Affatato ◽  
Alessandro Ruggiero ◽  
Jonathan Salvatore De Mattia ◽  
Paola Taddei
Keyword(s):  
Phase Transformation ◽  
Metal Transfer ◽  
Tribological Behaviour ◽  
Femoral Heads

Zirconia Phase Transformation, Metal Transfer, and Surface Roughness in Retrieved Ceramic Composite Femoral Heads in Total Hip Arthroplasty

2014 ◽  
Vol 29 (11) ◽  
pp. 2219-2223 ◽  
Author(s):  
Marcella Elpers ◽  
Denis Nam ◽  
Susie Boydston-White ◽  
Michael P. Ast ◽  
Timothy M. Wright ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Phase Transformation ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Ceramic Composite ◽  
Metal Transfer ◽  
Total Hip ◽  
Femoral Heads ◽  
Zirconia Phase

Zirconia Phase Transformation in Zirconia-Toughened Alumina Ceramic Femoral Heads: An Implant Retrieval Analysis

2019 ◽  
Vol 34 (12) ◽  
pp. 3094-3098 ◽  
Author(s):  
Thu M. Nguyen ◽  
Lydia Weitzler ◽  
Christina I. Esposito ◽  
Alessandro A. Porporati ◽  
Douglas E. Padgett ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Alumina Ceramic ◽  
Retrieval Analysis ◽  
Femoral Heads ◽  
Zirconia Phase ◽  
Zirconia Toughened Alumina

An Experimental Study of Metallic Transfer on Ceramic Femoral Heads

2009 ◽  
Author(s):  
Douglas M. Doud ◽  
Preston R. Beck ◽  
Donald R. Petersen ◽  
Jack E. Lemons ◽  
Alan W. Eberhardt
Keyword(s):  
Experimental Study ◽  
Femoral Head ◽  
Life Expectancy ◽  
Metal Transfer ◽  
Acetabular Cup ◽  
Total Hip ◽  
Total Hip Replacements ◽  
Femoral Heads ◽  
Hip Replacements ◽  
Postoperative Dislocation

Postoperative dislocation of total hip replacements has been documented to occur at a rate of approximately 2.4–3.9% [1–3]. Such events may result in the transfer of titanium from the acetabular cup to the femoral head, both during the dislocation and surgical reduction of the dislocated joint [3,4]. If the head is reduced with this transfer present, the joint life expectancy, which depends on articulating surfaces remaining smooth, is reduced [4]. Although the presence of metal transfer on retrieved femoral heads after dislocation is documented, no previous studies have attempted to quantify the forces or contact stresses at which metal transfer occurs.

Kinetics and the role of off-stoichiometry in the environmentally driven phase transformation of commercially available zirconia femoral heads

2012 ◽  
Vol 8 (4) ◽  
pp. 1639-1647 ◽  
Author(s):  
Kyoju Fukatsu ◽  
Andrea Leto ◽  
Wenliang Zhu ◽  
Nobuhiko Sugano ◽  
Giuseppe Pezzotti
Keyword(s):  
Phase Transformation ◽  
Femoral Heads

scholarly journals Does Metal Transfer Differ on Retrieved Ceramic and CoCr Femoral Heads?

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Eliza K. Fredette ◽  
Daniel W. MacDonald ◽  
Richard J. Underwood ◽  
Antonia F. Chen ◽  
Michael A. Mont ◽  
...  
Keyword(s):  
Surface Area ◽  
Metal Transfer ◽  
Wear Testing ◽  
Median Surface ◽  
Arc Length ◽  
Visual Evidence ◽  
Femoral Heads ◽  
Bearing Materials ◽  
Pin On Disk

Metal transfer has been observed on retrieved THA femoral heads for both CoCr and ceramic bearing materials.In vitrowear testing has shown increased wear to polyethylene acetabular liners with the presence of metal transfer. This study sought to investigate the extent of metal transfer on the bearing surface of CoCr and ceramic femoral heads and identify prevalent morphologies. Three bearing couple cohorts: M-PE (n=50), C-PE (n=35), and C-C (n=15), were derived from two previously matched collections (n=50/group) of CoCr and ceramic femoral heads. From the three cohorts, 75% of the femoral heads showed visual evidence of metal transfer. These femoral heads were analyzed using direct measurement, digital photogrammetry, and white light interferometry. Surface area coverage and curved median surface area were similar among the three cohorts. The most prevalent metal transfer patterns observed were random stripes (n=21/75), longitudinal stripes (n=17/75), and random patches (n=13/75). Metal transfer arc length was shorter in the M-PE cohort. Understanding the morphology of metal transfer may be useful for more realistic recreation of metal transfer inin vitropin-on-disk and joint simulators studies.

Kinetics of the Phase Transformation of Non-HIPed Zirconia Femoral Heads

2007 ◽  
Vol 330-332 ◽  
pp. 1203-1206 ◽  
Author(s):  
Junji Ikeda ◽  
Giuseppe Pezzotti ◽  
Mikio Iwamoto ◽  
Masaru Ueno
Keyword(s):  
Phase Transformation ◽  
Spectroscopic Observation ◽  
X Ray ◽  
Hip Simulator ◽  
Raman Microprobe ◽  
Femoral Heads ◽  
Kinetics Of ◽  
Simulator Test

The kinetics of tetragonal-to-monoclinic phase transformation (t→m transformation) in the earlier generation zirconia femoral heads was evaluated by X-ray diffractometry, laser microscopy and Raman microprobe spectroscopy. From previous results of hip-simulator study, it was confirmed that phase transformation on the surface of zirconia femoral heads had little influence on wear rate of UHMWPE sockets, and in some zirconia femoral heads, only a slight increase in monoclinic fraction was observed during hip-simulator test. In this study, we suggest that the models of phase transformation progress during tests in hip-simulator and aging tests are different based on both laser microscopic and Raman/fluorescence spectroscopic observation. Besides this finding, this study shows that Raman spectroscopy is a useful technique for the evaluation of the kinetics of phase transformation in femoral heads after both in vitro and in vivo environmental exposure.

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