This is what I was thinking. We are not trying to scare you. Polli starting limping Sept. 07. We did extensive x-rays- all clear.
She kept on limping. We limited her walks to the grass as it was easier on her. Then, it started to get better and it all but disappeared. She would limp very infrequently. 11 months later she started limping again- same leg. We did not panic because we had done the tests. After 2-3 weeks of limping (not too badly, just enough to see her gait was off) I was about to make the appointment for x-rays when she fractured her leg by tripping on the steps and the rest as they say is history.
It could also be something like the beginning of a corn which I understand are very painful to arthritis.
What I've learned is that if they are limping, they are in pain.
Prayers for an easy diagnosis and fix.
ETA- just read the following posts. I am very happy to hear good news in H&M!