FAQ: I have a pulling pony that has done real well this year but seems to be sore in his knees. He is also getting a little old, and his knees are warm but they do not have any swelling.
I suggest you pack his feet with Sole Pack for a week, and then we can rule out the tender feet issue. Since he has some age on him and you felt warmth in his knees, I would use Vita Oil massages on his knees daily, and we will see how he gets along with this treatment.