My leg is the same we think. I am not allowed to jump or do stairs (mom has been carrying me up and down most of the time but it's pretty difficult in a tri-level house - stairs to go to bed and the computer room, stairs to the kitchen, stairs to go outside). I am still going on walks and doing some very minimal playing (no jumping). Diana suggested heat 3 times a day so we are doing that. We contacted my vet but haven't seen her for an exam yet. We're hoping for that soon - she said she would have to see me to get a better idea if it is knee, hip, back, or leg. One thing mom realized is that for a long time now when she brushes me, I twitch that right leg and pull it up closer to my body. She thought I was being a weirdo and never dreamed that I could be injured. Until I stopped jumping the other day, that is the only sign I ever gave her of anything being wrong and she didn't really see it. It hasn't been too bad to rest the past two days because it has been raining here. It will be harder when the weather gets nicer again.