Ceramic Industry

Amedica Receives Knee Prosthesis Patent

September 15, 2010

Amedica Corp. has been granted U.S. Patent No. 7,776,085 B2, covering an improved knee implant prosthesis that features a monoblock ceramic tibial component for articulation with natural or prosthetic (resurfaced) femoral surfaces.

The tibial component is created from a silicon nitride monoblock adapted for fixation relative to a patient's tibial bone. Alternately, it can be affixed by a ceramic bearing insert component carried by a tibial baseplate member that is adapted for fixation relative to the tibial bone. In either form, the monoblock silicon nitride tibial component includes one or more upwardly concave articulation surface that promotes movable bearing engagement with a generally convex or condylar-shaped femoral articulation surface.

According to Ben Shappley, CEO, president and director, the monoblock silicon nitride technology with an innovative bone-contacting BioactiveTM surface provides implants with favorable wear characteristics and extended service life. In the long term, the technology helps surgeons achieve more successful outcomes in restoring patient function and allows individuals to return to productive and pain-free lives.

“Improvements in knee prostheses using monoblock silicon nitride with bio-ingrowth technology in the tibial component eliminate conventional polymer-based bearing inserts and the related undesirable wear debris problems and revisions associated with the older technologies used in current implants,” Shappley said. “Our unique technology allows us to combine our high-strength silicon nitride with an ultra-low wear, surface-bearing technology that is designed for secure, lifetime fixation. This gives surgeons flexibility in design choices and the ability to improve anatomic fit and function for positive, lasting results and significant outcome improvement.”

For more information, visit www.amedicacorp.com.