In kneed of testing

Sunita P. Ahir, Gordon W. Blunn, Hani Haider, Peter S. Walker, Martin Browne, Peter J. Gregson

Research output: Contribution to journalArticle

Abstract

The standardized testing method for tibial trays, proposed by the International Standards Organizations (ISO), was evaluated. Two components were analyzed, the Kinematic and the Kinemax, one with a known history of failure by fracture and one that does not have such a record, respectively. Finite element analysis was used to calculate stresses in the two tibial tray designs subjected to the conditions proposed in the ISO test. The analyses suggest that the ISO test is unrealistic and that it exaggerates the stresses on the tibial baseplate. Using a load of 2000 N, the test cannot differentiate between tibial trays that are known to fail in vivo and trays that give successful clinical performance.

Original languageEnglish (US)
Pages (from-to)746-748
Number of pages3
JournalMaterials World
Volume6
Issue number12
StatePublished - Dec 1998

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Science(all)
  • Mechanics of Materials
  • Metals and Alloys

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    Ahir, S. P., Blunn, G. W., Haider, H., Walker, P. S., Browne, M., & Gregson, P. J. (1998). In kneed of testing. Materials World, 6(12), 746-748.