A friend of mine has a little Shetland and all of a sudden he started walking with a limp, he has had this limp for 3 months now and his front left shoulder muscle has deteriorated and concave. She has had the vet out on numerous occasions, xrays, medication, also the physio has been out to give us excercises to do but nothing is working. He had lost a lot of weight but has now gained it again, he doesn’t seem to be in pain but it’s so hard to actually know without talking horse language. His limp is pretty severe and the owner is beside herself knowing what to do. Any suggestions would greatly received.