Does it seem painful?
Did they say why they didn't x-ray?
It doesn't seem to hurt her very much. They said there wasn't anything wrong with her leg or shoulder and it could just be old age and to just massage her shoulder daily, but it doesn't seem to be working. She yelped once in the last 3 months about a week ago, but hasn't shown any pain since.
Thanks for answering my questions.
It sounds like it could be simple muscle wasting, which happens a lot in geriatric dogs. The muscles around the joint sort of whither and causes the bones underneath to shift and sit differently than they used to. I'd likely be more worried if she was always painful, but since she's not, it's probably not something like an arthritic change.
That being said, since it hasn't gotten any better since the last time she saw the vet, it might not be a bad idea to ask them to take a quick x-ray, just to be on the safe side.
I hope this helps.