Volumetric assessment of material loss from
retrieved cemented metal hip replacement
stems
Volumetric assessment of material loss from
retrieved cemented metal hip replacement
stems
The aim of this study was to investigate the scale of metallic wear debris generation at the cement-stem interface of polished cobalt-chrome implants. Thirty-one Zimmer CPT cemented femoral stems were retrieved; mean time in vivo was 77.8 months (range 38-97 months), with 70% (n=21) of the stems considered to be well-fixed at the time of revision surgery. Volumetric loss was measured using optical microscopy, with focus variation technology capable of 3D reproduction of the surfaces. The scale of loss was found to be pronounced (mean: 3.1mm3, 0.02-11.4mm3), with a mean rate of 0.5mm3/year (0.003-1.9mm3/year). These results demonstrate that material loss from the cement-stem interface of is comparable to that of a taper interface, even in apparently well-fixed stems.
bone cement, tribocorrosion, fretting, wear volume
Cook, R.B.
06f8322d-81be-4f82-9326-19e55541c78f
Shearwood-Porter, Natalie
ed7357b4-ad0e-4df4-bb6a-da7bb6ea420b
Latham, Jeremy
c6c195b3-c4c3-41fd-b38f-0ae20dd52fd0
Wood, Robert J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Cook, R.B.
06f8322d-81be-4f82-9326-19e55541c78f
Shearwood-Porter, Natalie
ed7357b4-ad0e-4df4-bb6a-da7bb6ea420b
Latham, Jeremy
c6c195b3-c4c3-41fd-b38f-0ae20dd52fd0
Wood, Robert J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Cook, R.B., Shearwood-Porter, Natalie, Latham, Jeremy and Wood, Robert J.K.
(2015)
Volumetric assessment of material loss from
retrieved cemented metal hip replacement
stems.
Tribology International.
(doi:10.1016/j.triboint.2014.12.026).
Abstract
The aim of this study was to investigate the scale of metallic wear debris generation at the cement-stem interface of polished cobalt-chrome implants. Thirty-one Zimmer CPT cemented femoral stems were retrieved; mean time in vivo was 77.8 months (range 38-97 months), with 70% (n=21) of the stems considered to be well-fixed at the time of revision surgery. Volumetric loss was measured using optical microscopy, with focus variation technology capable of 3D reproduction of the surfaces. The scale of loss was found to be pronounced (mean: 3.1mm3, 0.02-11.4mm3), with a mean rate of 0.5mm3/year (0.003-1.9mm3/year). These results demonstrate that material loss from the cement-stem interface of is comparable to that of a taper interface, even in apparently well-fixed stems.
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Accepted/In Press date: 29 December 2014
e-pub ahead of print date: 5 January 2015
Keywords:
bone cement, tribocorrosion, fretting, wear volume
Organisations:
nCATS Group
Identifiers
Local EPrints ID: 373531
URI: http://eprints.soton.ac.uk/id/eprint/373531
ISSN: 0301-679X
PURE UUID: fc8eb8d2-1b4d-4987-b34e-c0c6d887fd22
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Date deposited: 21 Jan 2015 15:19
Last modified: 15 Mar 2024 03:34
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Author:
Natalie Shearwood-Porter
Author:
Jeremy Latham
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