Had knee surgery done about 20 years ago, to rebuild a shattered kneecap and repair some ligaments. Slipped on an icepatch, and met the curb with my knee. Not good. Anyway, if they cut you all up like they did mine, I gotta 10 inch scar, Take the THERAPY to heart! I wasn't supposed to be able to walk fast, much less run! I stayed with therapy 3 days a week, for 9 months. It was the BEST thing to do. I CAN run and jog an sprint an I feel like it never happened. Take your rehab seriously, and it'll work wonders!!! Good Luck!!! ;)