OK finally had to break down and start injections, a couple weeks ago had left stifle and both outside knees injected, all was good, now both rear ankles down to the hoofs / cornet band are swollen. He's not lame or doesn't appear to bother him still runs and bucks across pasture. Could this be infection or a reaction to the injection?
Just gonna throw this out there. But it may not be related to your injections at all. ....Could be scratches. ..Either way get to vet incase it is related to the injection