Yes, the question you have is valid. You need to know that the vertebra above and below the site are OK. Risk factors, all of it needs to be discussed. I didn't have to take the EMG test. I think they knew from the MRI I was not so hot, so he didn't feel it would do much good. Just confirm what was going on. You may want to ask why the doctor feels the EMG is necessary. Don't accept a myleogram without research, if it should be asked of you. I tend to stay away from tests that ouch. In fact I try to squirm my way out of them!
I really hope that you get good resolution with any decision that is made. I know it is scary. That is why I joined here too. I just never left because of the support I got. It does help to talk to others that have spinal issues. Takes the edge off of worry, and you get an honest response. Keep in touch, I do care. None of it is fun to go through. ginnie