The US woman told doctors that she had voluntarily begun a vigorous dental flossing, with bleeding from her gums as a result.
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The report states that her knee was infected with Streptococcus gordonii, a bacterium that is typically found in the mouth.
The woman told doctors that she had voluntarily begun a vigorous dental flossing, with bleeding from her gums as a result. Doctors suppose that it's likely that the bacteria spread from the mouth, through her bloodstream and onto the knee implant.
"This bacteria lives in the mouth, [but doctors] happened to find it in a place where we don't typically find it, which is the knee joint," said Dr Ala Dababneh, an infectious diseases doctor at the Mayo Clinic in Minnesota.
The doctors operated upon the woman's knee, removing as much of the bacteria as possible.
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