I dislocated my patella about 6 weeks ago in a fall from my bmx, and I have an MRI scheduled in a week, which I feel almost certain is going to show a partially or fully torn ACL, since I still can't bend my knee past 90 degrees, although I can walk normally and there is little to no pain and swelling at the knee. If this is the case, I plan to have surgery as soon as possible to repair it. I do competitive bmx flatland, and have a major competition in January '09. This sport requires my injured leg to act as a balance mechanisim, mostly, and occasionally it's required to kick/scuff the tyres, so there's little impact on the knee joints. Given this, if I have surgery in the beginning of September, would I be fully revovered, or well enough to give it my all in late January at the comp..?? How soon after can I start riding again? I'm 31yrs old and train with weights regularly, so I would be hitting my PT hard to speed my recovery. How long does a full recovery normally take..??