Contrary to belief, implants are not completely sterile. When you insert a foreign body into the human body, you create a new habitat for bacteria.
Bacteria and fungi grow on medical implants, such as hip and knee replacements, pacemakers and screws used to fix broken bones, researchers report.
In a new study, Danish investigators examined 106 implants of different types and the surrounding tissue in patients. The findings showed that 70% of the implants had been colonised by bacteria, fungi or both.
However, none of the patients with bacteria or fungi on implants showed signs of infection, according to the team at the University of Copenhagen, Denmark.