All-Polymer Knee Implant Made of Zeniva PEEK
Solvay and Okani Medical Technology Work Together
The supplier of specialty polymers Solvay, Alpharetta, USA, announced that Okani Medical Technology, a China-based manufacturer of artificial joint applications, has developed an all-polymer knee implant based on Solvay’s Zeniva polyetheretherketone (PEEK).
Okani evaluated Zeniva PEEK’s suitability for the femoral and tibial tray components of its knee implant according to ISO 14243-1:2009, which simulates normal walking behavior over 10 years. The implant shows 50 percent less wear versus a metal implant as measured by material loss over 3 million cycles.
The polymer has previously been successfully used in spinal implants. Unlike implants made of cobalt chrome or titanium alloys, those molded from Zeniva PEEK exhibit a modulus similar to cortical bone, which can improve patient comfort, provide a more stable fixation over time and extend implant lifetime due to significantly reduced wear of the total knee-joint prosthesis.
Solvay Advanced Polymers
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