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Is a small bone located at the back of your knee and only ruthly 10-30% of people have a fabella, fabella can break up muscle of which you would need an oparation to take out the bone.
Person 1: Hey iv just been to the hospital

Person 2: oh, how did it go?

Person 1: it turns out i have a fabella
by Noobymcnoob July 10, 2015
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