[annapurna]

First, push for the x-ray. It's simple and easy and answers questions about subsidence and mispositioning. The MRI can be used but you'll probably need a CT, possibly with contrast, if you can't find the paperwork about your original surgery. The CT will permit imaging of the ADR level, if the imaging center is careful, but it takes time and effort to get them to do so and the contrast, which might be needed, is a significant risk itself. Really push the original surgeon to cough up all of the information available about that surgery. Also, see if you can get the pre-surgery evaluation information used to admit you prior to the ADR. They should have had an MRI for something to show that you were an acceptable ADR candidate.

The EMG seems like a pretty advanced diagnostic step when you haven't got an x-ray or the results from the MRI. It isn't a bad step, just something that tends to work better when the person doing the test knows what to look for.