She needs some niacin. Feed her peas everyday along with her regular food. You can also get her some vitamin mix from tractor supply and add to her water. You should see an improvement after a while. We have a couple older ones that are having a hard time now. But when they were young the niacin...
Perkins seem to have this problem. A couple of our Perkins are wobbly and favour on leg. They also use the wings for stability. I think it's in the breed. Our cuyagas are doing great and are the same age. 2 yrs.
Swimming does help because it takes the weight off of the leg. Poor boy may end up...