Bad news. Logan had Legg-calves Perthes. I took him for a second opinion hoping for a better diagnosis, but it's worse. However, the second diagnosis makes a lot of sense. It is very common in yorkies & I could clearly see the difference in density in the hip bones on the x-ray. My vet feels it's pretty aggressive because it isn't there on the january x-ray, but is very noticable on the 10/13/08 x-ray. My vet didn't say I had to get the surgery right away, but I get the feeling that the sooner we do it the better. His right leg is already shorter than the left & as of right now he doesn't have muscle atrophy, but i'm to watch it closely. My vet recommends I take him to Michigan state and have a complete joint replacement done instead of just the femural head surgery which I can have done in fort wayne. I plan to go back in & discuss with him in depth the difference between the two & what is the best for the long run. my vet said the michigan state surgery should run me about $3500. We do have the money & a healthy little boy is worth any amount of money. He will remain on anti-inflammatories until we get the surgery done. According to the people on yorkie talk it appears to be a pretty effective surgery.