Knee-reversal hex

"I hexed the man who came for it. I'd like to see him fly with his knees on back to front, the great hairy hog."

- Gertie Keddle

This hex caused the victim's knees to reverse position from the front of their legs, where they were supposed to be located, to the back.

Known uses

 * Gertie Keddle used this hex when a man playing an early form of Quidditch came to her garden to retrieve his ball.
 * Torquil McTavish had this spell used on him in 1754, during a broom race.

Appearances

 * Quidditch Through the Ages
 * Wonderbook: Book of Spells