OMG, Kim, how scary! Indeed it sounds a lot like a seizure. I don't want to scare you, but I would call the emergency vet. Not sure about the sprains, but if these injuries caused a blood clot, this may very well result in some kind of stroke, I suppose.

Another option would be an epileptic seizure. If that's the case, meds may help her a lot to deal with it, but only a vet can tell.

I sure hope our sweet Tabitha will be fine, and of course I will keep her in my thoughts!

Kirsten