@Nathan6692 30 January 2021 more from that month

Some people have an extra bone in their knee (and it's getting more common). If you were under the impression that the human body had finished evolving, think again. It turns out that some people have a bone in their knee called a fabella. And while this particular little bone with an unknown purpose was once fading away, over the last century and a half, it's gotten more common. Back in 1875, nearly 18 percent of people examined had a fabella. That number dropped to 11 percent by 1918. However, by 2018, 39 percent of individuals had this mysterious bone. #EverythingsInfo