Knee Pain: Filling Cartilage Potholes

March 29, 2010 12:00:00 AM PDT
From skiing down the slopes in Vancouver at the 2010 Olympic games, to running down your own road ... You don't have to be an all-star athlete to feel the effects of a hard workout. Often, knees take the biggest beating. A new type of transplant is getting people back to their workouts faster than ever before.