I did, but Phene was only with me for 1.5 weeks post diagnosis. My vet kept insisting that it was arthritis because osteo can present itself differently in greyhounds than in other dogs. It wasn't until I insisted on x-rays and sending them to OSU for a second opinion (my vet didn't that it was osteo) that I knew how the diagnosis. I wouldn't have opted for amputation because of his age. Now that he's gone, I realize that he must've been very ill before he was diagnosed and that amputation wouldn't have extended his life or quality of life very long at all. I'm really glad that I didn't do it. I don't have any regrets about the way I handled his illness, except that I had to go out of town for work and wasn't with him during his last few days, although I was there when he was sent to the bridge. His condition deteriorated so quickly; he seemed great and comfortable when I left town Thursday and was more than ready for the bridge by the time I returned Saturday morning. We took him straight to the vet because even if he had a few comfortable days, he wasn't going to get any better and I didn't want to extend his pain. Early diagnosis or late diagnosis, or even if it was arthritis, management wouldn't have changed.
Good luck and don't forget that we're here for you.
ETA that there is a GTer whose hound is being treated with Chinese herbs. He was diagnosed at the same time as Phene and is still alive and well. If anybody's interested, I can ask her to post the protocol.