Premise: Jaden Christopher Syre Smith (born July 8, 1998) is an American actor and rapper. He is the son of Jada Pinkett Smith and Will Smith. Jaden Smith's first movie role was with his father in the 2006 film "The Pursuit of Happyness". He also acted in the 2008 remake of "The Day the Earth Stood Still" and the 2010 remake of "The Karate Kid", and was in the 2013 film "After Earth" with his father.
Hypothesis: Jaden Smith broke his wrist acting in the karate kid.