Surface Roughness of CoCr and ZrO2 Femoral Heads with Metal Transfer : A Retrieval and Wear Simulator Study
Joint Authors
McKee, R. Travis
Cuckler, John M.
Lemons, Jack E.
Eberhardt, Alan W.
Peterson, Donald W.
Beck, Preston R.
Source
International Journal of Biomaterials
Issue
Vol. 2009, Issue 2009 (31 Dec. 2009), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2009-07-01
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Metal transfer to femoral heads may result from impingement against the metallic acetabular shell following subluxation/dislocation, or when metallic debris enters the articulation zone.
Such transfers roughen the head surface, increasing polyethylene wear in total hip replacements.
Presently, we examined the surface roughness of retrieved femoral heads with metallic transfer.
Profilometry revealed roughness averages in regions of metal transfer averaging 0.380 μm for CoCr and 0.294 μm for ZrO2 which were one order of magnitude higher than those from non-implanted controls.
Scanning electron microscopy (SEM) revealed adherent transfers on these retrievals, with titanium presence confirmed by electron dispersive spectroscopy.
Due to the concern for increased wear, metal transfer was induced on non-implanted heads, which were then articulated against flat polyethylene discs in multidirectional sliding wear tests.
Increased polyethylene wear was associated with these specimens as compared to unaltered controls.
SEM imaging provided visual evidence that the transfers remained adherent following the wear tests.
Pre- and post-test roughness averages exceeded 1 μm for both the CoCr and ZrO2 heads.
Overall, these results suggest that metal transfer increases the surface roughness of CoCr and ZrO2 femoral heads and that the transfers may remain adherent following articulation against polyethylene, leading to increased polyethylene wear.
American Psychological Association (APA)
Eberhardt, Alan W.& McKee, R. Travis& Cuckler, John M.& Peterson, Donald W.& Beck, Preston R.& Lemons, Jack E.. 2009. Surface Roughness of CoCr and ZrO2 Femoral Heads with Metal Transfer : A Retrieval and Wear Simulator Study. International Journal of Biomaterials،Vol. 2009, no. 2009, pp.1-6.
https://search.emarefa.net/detail/BIM-452777
Modern Language Association (MLA)
Eberhardt, Alan W.…[et al.]. Surface Roughness of CoCr and ZrO2 Femoral Heads with Metal Transfer : A Retrieval and Wear Simulator Study. International Journal of Biomaterials No. 2009 (2009), pp.1-6.
https://search.emarefa.net/detail/BIM-452777
American Medical Association (AMA)
Eberhardt, Alan W.& McKee, R. Travis& Cuckler, John M.& Peterson, Donald W.& Beck, Preston R.& Lemons, Jack E.. Surface Roughness of CoCr and ZrO2 Femoral Heads with Metal Transfer : A Retrieval and Wear Simulator Study. International Journal of Biomaterials. 2009. Vol. 2009, no. 2009, pp.1-6.
https://search.emarefa.net/detail/BIM-452777
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-452777