3 surgeries on torn quad tendon, infection, 6 years out still have severe pain and swelling

6 years ago ruptured quad tendon in a river going off of a rope swing, got infected tour quad tendon and had 3 surgeries to fix ruptured quad tendon and wash out infection, 6 years later still have tremendous pain and swelling on a continuous basis which renders me using crutches as if the injury was fresh to this date , any ideas???