I agree talk to your doctor. See what he/she likes to do. but one thing I do know is that they repair knees so well now Willis McGahee ripped apart his knee and 3 hours after surgery he was bending his knee and working it out. He ofcourse went in the 1st round of the NFL draft and is an amazing back.
His injury: WARNING: dont click if your squeemish.
http://www.gofish.com/player.gfp?gfid=30-1025418&hid=2141213386 But if you work hard after you start to heal you'll be better than before.