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Extra bones are not too dangerous. I myself have 3 extra bones on my legs. One of these is on the back of my leg ... i had this remove as it was giving me bother walking. the other two are on the inside of my knees. Extra bones are caused at the growth plates on your main bones, i.e the Femur or likewise. To answer your question they can sometimes cause more wear and tear but are generally smooth, mines was causing the muscle to cramp round it hence why i got it removed. if you are worried make an appointment with your GP to get it checked. hope that this helps

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16y ago

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