Arthritis in young lamb

Hi One of our pet lambs became stiff and gradually became unable to walk. Vets suggested we don’t waste our time and chances of recovery were slim. I got penicillin and gave him an injection each day and also fed mms in his milk each day until he was weaned. At 1st slowly became more mobile and began walking again. Always could tell him apart from his sibling but now at 6 months you can’t tell he walks normal and you wouldn’t even know he was so crippled. I could have given a higher dose of the mms if I wasn’t using penicillin also. I believe the mms would have cured him on its own if I had only used it. Anna