Wear Performance of Large-Diameter Differential-Hardness Hip Bearings

C. Lowry Barnes, David DeBoer, Raymond S Corpe, Satya Nambu, Michael Carroll, Irina Timmerman

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

We hypothesized that differential-hardness hard-on-hard bearings would generate less wear debris compared with like-hardness metal-on-metal (M-o-M) bearings. We conducted wear testing on 3 types of large-diameter hard hip bearings: (1) contemporary cast-on-cast ("like" hardness) M-o-M; (2) differential-hardness M-o-M; and (3) differential-hardness ceramic-on-metal. A simulated gait profile ranging from 200 to 2000 N was applied to the bearings at a frequency of 1 Hz for 5 Mc. All bearings were tested in an anatomically inverted position in 90% α calf serum. Both differential-hardness bearing systems produced lower run-in wear rates (90%-97%), steady-state wear rate (45%-84%), and total metal wear (68%-88%) compared with the like-hardness bearing system. The ceramic-on-metal bearings exhibited the least wear followed by differential-hardness M-o-M bearings; like-hardness M-o-M bearings exhibited the greatest amount of wear. These findings support our hypothesis that differential-hardness hip bearing systems produce less metallic wear debris than those with like hardness and may result in lower metal ion release in vivo.

Original languageEnglish (US)
Pages (from-to)56-60
Number of pages5
JournalJournal of Arthroplasty
Volume23
Issue number6 SUPPL.
DOIs
StatePublished - Sep 1 2008

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Hardness
Hip
Metals
Ceramics
Gait

Keywords

  • hip bearings
  • metal-on-metal bearings
  • total hip arthroplasty
  • wear debris

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

Cite this

Barnes, C. L., DeBoer, D., Corpe, R. S., Nambu, S., Carroll, M., & Timmerman, I. (2008). Wear Performance of Large-Diameter Differential-Hardness Hip Bearings. Journal of Arthroplasty, 23(6 SUPPL.), 56-60. https://doi.org/10.1016/j.arth.2008.05.021

Wear Performance of Large-Diameter Differential-Hardness Hip Bearings. / Barnes, C. Lowry; DeBoer, David; Corpe, Raymond S; Nambu, Satya; Carroll, Michael; Timmerman, Irina.

In: Journal of Arthroplasty, Vol. 23, No. 6 SUPPL., 01.09.2008, p. 56-60.

Research output: Contribution to journalArticle

Barnes, CL, DeBoer, D, Corpe, RS, Nambu, S, Carroll, M & Timmerman, I 2008, 'Wear Performance of Large-Diameter Differential-Hardness Hip Bearings', Journal of Arthroplasty, vol. 23, no. 6 SUPPL., pp. 56-60. https://doi.org/10.1016/j.arth.2008.05.021
Barnes CL, DeBoer D, Corpe RS, Nambu S, Carroll M, Timmerman I. Wear Performance of Large-Diameter Differential-Hardness Hip Bearings. Journal of Arthroplasty. 2008 Sep 1;23(6 SUPPL.):56-60. https://doi.org/10.1016/j.arth.2008.05.021
Barnes, C. Lowry ; DeBoer, David ; Corpe, Raymond S ; Nambu, Satya ; Carroll, Michael ; Timmerman, Irina. / Wear Performance of Large-Diameter Differential-Hardness Hip Bearings. In: Journal of Arthroplasty. 2008 ; Vol. 23, No. 6 SUPPL. pp. 56-60.
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