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Oxinium™ Damage Tolerance

In the real world, damage to the surface of a femoral component is always a risk.

Oxide Adhesion Tests, Hunter

Test #1:

To investigate the damage tolerance to the Oxinium™ material, a crater was made through the ceramic oxide surface with a diamond-tipped indenter. Material displaced from the crater heaved up under the ceramic oxide, providing an aggressive challenge to the oxide adhesion.

image of test 1
  • The absence of chipping and spalling around the indentation crater indicates excellent adhesion of the ceramic oxide, despite extensive deformation of the metal substrate.

Test #2:

A thin groove was milled through the ceramic oxide of flat Oxinium™ disks. Then bone cement pins were rubbed across the groove for 10 million cycles.

image of test 2
  • No additional damage to the implant was noted even after 10 million cycles of this extremely aggressive protocol. This result supports the premise that even under extreme conditions catastrophic failure will not result.