i'm a bit confused, b/c it seems like he telling you it looks like arthrirus and degenerative bone, and an appt. for the next week that he is trying to help you. Maybe the cortisone isn't the best option for you, but it doesn't sound like he's mistreating you. I see, sorry had to reread your post, this is a different problem.... at least he's open to saying it could be the spine. You want to start with x-rays first, then move to the bigger more expensive test like MRI. Maybe at the follow up he can help you out some.
Maybe a good anti-infamitory would help, like toradol. and a muscle relaxer like Flexeril may help with the muscle cramps. Make sure you are getting plenty of potassium.
Also, a PCP, doesn't really do a lot witht he spine, other than refer you to a Neuro/spine specialist. Also, a PET scan is of the brain correct?? I think an MRI would be a good option.
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