I have a holstein steer, when he was 10 days old, that lost the hide off both knees. The vet put him on 7 days of amoxicillian then 7 day of naxcel. Treatment was done. The next day one knee began to drain a watery puss, he was down again. Back on amox stayed on for about 20 days. Knee would spray puss when straightened (we did this twice a day); then flushed with peroxide and used a drawing salve. When no more puss; changed to Nuflor every other day. 50 days old and knee is giving him trouble getting up. It's stiff and sore but, no puss. Had to put him back on a bottle. Gave amox today because he's bad again. When on amox he does better, can't leave on amox forever. What do you suggest we do? vet has no idea. Hillside's wife