Nova was still limping -- the shot really didn't seem to do much for him -- so I took him back into the vet today. Where they did another exam, took some x-rays, and decided that he probably really does just have a pulled muscle. And maybe he keeps kind of re-injuring it, since it hasn't stopped him jumping up on things. There was discussion of maybe confining him to a small space with nothing to jump on, but it was eventually decided that I could just take away the giant cat tree, because that's the only really high place he gets onto. Well, that and my computer desk, but he only does that when I'm home, so theoretically I can discourage it. Of course, even as I type this, he launched himself up here again, so maybe that's a little problematic. But hopefully it's not quite as bad as climbing all the way up near the ceiling.
And they still don't have all Newt's test results. Apparently they had to be sent to two different labs, one after the other, so it's taking a while.