14 March 2014

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In 1997, Smith & Nephew introduced OXINIUM Oxidized Zirconium. This patented metal alloy is available across our hip and knee implant systems and nearly 1 million implants have been sold globally. Its combination of biocompatibility, increased hardness and abrasion-resistance makes it a superior choice for hip and knee implants. OXINIUM material—a metal alloy with the surface transformed to ceramic using a patented process—has proven to be a superior metal for use in hip and knee implants due to its increased biocompatibility and superior resistance to scratching and abrasion. These properties result in implants demonstrating significantly less wear than those produced cobalt-chrome alloy implants (historically the material of choice in hip and knee implants) while avoiding metal sensitivity problems often identified with CoCr implants



  • OXINIUM material contains < 0.0035% nickel, the most commonly cited sensitizer and cause of reactions in patients with metal allergies.

  • OXINIUM’s unique alloy virtually eliminates physician concern of mechanically assisted crevice corrosion (MACC) and the trunnionosis commonly seen with other materials.

  • OXINIUM material has a surface hardness that is over twice that of cobalt-chrome. OXINIUM material may last longer than other implants as it reduces more than half of the implant wear common to other CoCr knees and hips based on lab simulator studies.

  • OXINIUM material has no risk of brittle fracture that can occur with ceramic implants.

  • OXINIUM material is 20% lighter than cobalt-chrome.


If you are a Healthcare Professional based in the US, you can learn more about OXINIUM oxidized zirconium at our US Healthcare Professional Website.