Hello - About a month ago my little Dash was limping and carrying his left hind leg, I kept a close eye on him and he seemed to get better, but the limping kept returning so I took him in to be looked at by my vet. I was told he has avascular necorosis of his femur and will need an FHO. The surgery is scheduled for this Wednesday, and I have been so worried about my little baby. What sort of things can I expect after this operation? What time of physical therapy can I give him, please advise, I would appreciate any amount of information.