Yes! It's the EMG test. The neurologist at that time said the pain in my legs, mainly the calves, is from the back and referred me back to the pain doctor. I also had the ultrasound test to make sure I have good blood flow in my legs. No problem there either. The back surgery I had was fusion too L3 and L4, with a spacer. I had it in March last year , in June I was well enough to fly up to WA State to stay with my daughter for a few days and we all flew up to Canada for my great niece's wedding. I was very encouraged. Then it slipped back to pain again. Everything in the MRI and X-ray showed no abnormality. It's like my brain just didn't register the correction and still flares up every time I move! Like your PT, mine couldn't understand either. I'm trying everything. Of all places, why my calves?? If I can get the pain level to 5 out of 10, I can deal with it, but the moment I put my feet on the ground when I get up in the morning till to to bed, I had to deal with a 8 or 9. I am out walking 20 minutes in the morning and 20 minutes in the afternoon. Sitting doesn't help so I'm in and out of the chair. Anyway, I just have to keep moving. I thank you for your advice. I have to call my pain doctor to see if he wants me to take the nerve test again. I had 2 epidurals this year and they didn't help so I think he's at a loss too.