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Volumetric assessment of material loss from retrieved cemented metal hip replacement stems

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
0301-679X
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).

Record type: Article

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
ORCID for R.B. Cook: ORCID iD orcid.org/0000-0002-2468-5820
ORCID for Robert J.K. Wood: ORCID iD orcid.org/0000-0003-0681-9239

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Date deposited: 21 Jan 2015 15:19
Last modified: 15 Mar 2024 03:34

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Contributors

Author: R.B. Cook ORCID iD
Author: Natalie Shearwood-Porter
Author: Jeremy Latham

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