Tally lasted 16 weeks. She could have gone at least a few days longer, but I knew what was going to happen.
We caught it fairly early. At first we did x-rays every couple of weeks, but the OS was progressing steadily and not all that rapidly, and the x-rays were uncomfortable for her, so we cut the frequency to about once a month. She'd had her last set--showing progress but not anything terrifying--just a week before she suddenly went very lame.
She was on pain meds only, which were adjusted each time she started limping. At first it was Metacam, then we added Tramadol, then more frequent Tramadol, then a higher dosage. She was on the maximum dosages of both at the end.
Cora? I don't know. I suspect the OS was there, but not visible, when she broke her leg in March. I'm sure it was there and hiding behind the repair hardware when she started limping again in August. She lasted another couple of months, on pain meds only.