OXINIUM

Oxidized Zirconium

Abrasion Resistance


4900 times more abrasion resistant than Cobalt Chrome

When hard, third-body particles roughen the metal femoral component, it leads to scratches and increased abrasive wear of the softer poly counterface. Surfaces that are more resistant to abrasive scratching reduce the potential for abrasive wear. OXINIUM implants are dramatically more abrasion-resistant than cobalt chrome implants.

Amount of material removed in abrasion test
 
OXINIUM and Cobalt Chrome Compared



Cement pins were rubbed against an OXINIUM disk and a cobalt chrome disk for 10 million cycles in order to test resistance to abrasion.

  • The wear track of the OXINIUM disk was 640 times less deep than cobalt chrome.
  • The OXINIUM disk exhibited more than 4,900 times less volumetric wear. 1
  • The OXINIUM surface was more than 160 times smoother.

References

1. G. Hunter and M. Long, “Abrasive wear of oxidized Zr-2.5Nb, CoCrMo, and Ti-6Al-4V against bone cement”, 6th World Biomaterials Cong. Trans., Society For Biomaterials, Minneapolis, MN, 2000, p. 835.