According to a new medical study and analysis, irrespective of the implant material, all types of hip replacement devices appear to work the same. The researchers said, the newer, metal-on-metal implants seem to be no more effective than older implants and may sometimes even be more problematic.
“Metal-on-metal and ceramic-on-ceramic hip implants might not be associated with any advantage, compared with traditional bearings such as metal-on-polyethylene or ceramic-on-polyethylene,” said lead researcher Dr. Art Sedrakyan, director of the Patient-Centered Comparative Effectiveness Program at Weill Cornell Medical College in New York City.
Sedrakyan said there is some medical evidence from three large national registries that higher rates of replacement surgery are associated with metal-on-metal implants, compared with metal-on-polyethylene implants. Even for newer implants such as metal-on-metal or ceramic-on-ceramic bearings, their advantage over traditional implants is not clear, Sedrakyan added.
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