knee stomp

I jagged to the other side and stamped down in the inside of his left knee with the flat of my heel, exploding the joint. He cried out, but in the voice of a hurt child. It was the strangest, eeriest thing I’ve ever heard from someone in a fight. It was as if the man I fought had retreated and his inner child—wild and terrified—had emerged and that was who I’d just hurt.

-Relentless pg. 321), Kindle Edition.