Finger grab

Tannhauser grabbed the extended fing and cranked it backwards. The brawler howled with pain. Tannhauser stepped past him and the brawler, his strength rendered useless, was forced to bend backwards from the waist to avoid dislocation of his knuckle. With the back of his right led Tannhauser swept him behind the knee. As the hulk crashed into the flagstones Tannhauser felt the finger snap at the second joint and let go.
TTCoP, pg. 46-47