Lubricant in Metal-On-Metal Hip Implants Found to be Graphite, not Proteins

By John Pontarelli, Megan Fellman, Northwestern University, Rush University Medical Center on Dec 23, 2011   Health  

Discovery May Lead to Hips That Function Better and Last Longer Newswise — CHICAGO – A team of engineers and physicians have made a surprising discovery that offers a target for designing new materials for hip implants that are less susceptible to the joint’s normal wear and tear.