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Tipper JL, Firkins PJ, Ingham E, et al. Quantitative analysis of the wear and wear debris from low and high carbon content cobalt chrome alloys used in metal on metal total hip replacements. J Mater Sci Mater Med. 1999;10(6):353-62doi: 10.1023/a:1026473723777.
Tipper, J. L., Firkins, P. J., Ingham, E., Fisher, J., Stone, M. H., & Farrar, R. (1999). Quantitative analysis of the wear and wear debris from low and high carbon content cobalt chrome alloys used in metal on metal total hip replacements. Journal of materials science. Materials in medicine, 10(6), 353-62. https://doi.org/10.1023/a:1026473723777
Tipper, J L, et al. "Quantitative analysis of the wear and wear debris from low and high carbon content cobalt chrome alloys used in metal on metal total hip replacements." Journal of materials science. Materials in medicine vol. 10,6 (1999): 353-62. doi: https://doi.org/10.1023/a:1026473723777
Tipper JL, Firkins PJ, Ingham E, Fisher J, Stone MH, Farrar R. Quantitative analysis of the wear and wear debris from low and high carbon content cobalt chrome alloys used in metal on metal total hip replacements. J Mater Sci Mater Med. 1999 Jun;10(6):353-62. doi: 10.1023/a:1026473723777. PMID: 15348136.
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J Mater Sci Mater Med. 1999 Jun;10(6):353-62. doi: 10.1023/a:1026473723777.

Quantitative analysis of the wear and wear debris from low and high carbon content cobalt chrome alloys used in metal on metal total hip replacements.

Journal of materials science. Materials in medicine

J L Tipper, P J Firkins, E Ingham, J Fisher, M H Stone, R Farrar

Affiliations

  1. Department of Microbiology, University of Leeds, Leeds, LS2 9JT, UK.

PMID: 15348136 DOI: 10.1023/a:1026473723777

Abstract

The biological reactions to polyethylene wear debris have been shown to result in osteolysis and loosening of total hip arthroplasties. This has led to renewed interest in the use of metal on metal bearings in hip prostheses. This study employed uniaxial and biaxial multistation pin on plate reciprocators to assess how the carbon content of the cobalt chrome alloy and the types of motion affected the wear performance of the bearing surfaces and the morphology of the wear debris generated. The low carbon specimens demonstrated higher wear factors than both the mixed carbon pairings and the high carbon pairings. The biaxial motion decreased the wear rates of all specimens. Plate wear was significantly reduced by the biaxial motion, compared to pin wear. The metal wear particles isolated were an order of magnitude smaller than polyethylene particles, at 60-90 nm, and consequently, 100-fold more particles were produced per unit volume of wear compared to polyethylene. The low carbon specimens produced significantly larger particles than the other material combinations, although it is thought unlikely that the difference would be biologically significant in vivo. The volumetric wear rates were affected by the carbon content of the cobalt chrome alloy, the material combination used and type of motion applied. However, particle morphology was not affected by the carbon content of the alloy or the type of motion applied.

Copyright 1999 Kluwer Academic Publishers

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