I had surgery to repair the ACL in February 2010 and was back in the gym by June, but rushed things too quickly and ended up re-tearing my MCL in September.
You have to understand the tone of the movie, because if it's supposed to be funny, it can be funny violent like the Home Alone stuff, but you have to really understand the tone of what you're doing and make the action work for that and for the character.

