It started about three weeks ago when I took her out to try a new saddle on and I noticed she was a bit "off" at the trot in the hind, not quite "lame" but not quite right. The previous few days we'd had a fair bit of rain and she can tend to run around in her paddock, so I figured she'd slipped or something and was a little tender, so I decided to just give her a few days.
With a few more days of rain and such she seemed a bit worse but there was no heat or swelling, and then I game out and there looked like there was an abscess burst on the hind leg so I attributed to lameness to that and let her rest up while I was away for a few days and got my mother to keep an eye on her/feed her).
Came back and she was still lame, worryingly so, and I got a vet out today (which cost a fortune) and he was very thorough and checked her a lot and he has not a clue what's wrong. He suspects its in the hip, or perhaps the hock but there was no swelling, no heat, no tenderness, will pick up both back feet, seems okay at the walk, but super lame at the trot. He was pretty confident that the lower leg/hoof is completely fine. He recommended I give her three more weeks off and if she's not better get Xrays, which won't be cheap and will involve having to truck her a fair way, so all in all it will probably cost more than the horse is worth. I know all of you guys are really pro-vet etc, but I don't want to spend possibly thousands on a $700 horse whose condition might be permanent. That sounds harsher than I mean it.. I adore Rosie but I have no idea what to do.
Obviously I want to fix this... but without knowing what it is I can't proceed. I was wondering if any of you have experienced anything like this? Or have some idea of things I could do? The vet pretty much said "try anything at this point". I just have not a clue what is wrong. She hasn't been in proper work for years, she doesn't share a paddock with horses, and she's only seven.
Any advice greatly appreciated.