I know this is a cattle board, but we've got a market hog with a bad front leg. His left knee is pretty swollen and he has made his other legs sore from favoring the hurt one. They stay in 8x8 pens by themselves unless they are out getting worked so I dont really know how he injured it. It's gotten to the point now he doesn't get up with out someone making him. I gave him a big dose of Tylan on the first day, no results, so he has been getting ten aspirins twice a day for a couple days now. Any suggestions?