Scientists are baffled by the resurgence of what they assumed was a defunct extra bone behind the knee.
At the turn of the century around one in 10 people, had a fabella—a bean-shaped bone that, like the kneecap, is tucked into the tendons.
Scientists Baffled by Resurgence of Mysterious Extra Bone in Humans
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A knee is manipulated in therapy. Pixabay
By Simon Veazey, Freelance Reporter
Updated:
