I'm not at all sure about that. According to sources i see, extra bones occur in roughly 10 to 30% people.
https://www.livescience.com/health/how-common-is-it-to-have-extra-bones-in-your-skeleton
I'm not at all sure about that. According to sources i see, extra bones occur in roughly 10 to 30% people.
https://www.livescience.com/health/how-common-is-it-to-have-extra-bones-in-your-skeleton