Hello all, I am new to the site. I fell about 3 months ago and was having some pretty bad back pain. My doctor sent me to physical therapy where they told me my SI joint was uneven on my right side. So they popped it. After that I have been have severe lower back/butt/hip pain that radiates down my leg with numbness, burning, and tingling.I have had injections in my back and hip with no effect. So, my doc ordered a MRI. I was shocked to find out that it didn't show anything. But I remembered that they propped my legs up on like foam and I asked the doc if that could've affected the results. He looked shocked and told me that when my legs were propped up it allieviated the compression on the nerve therefore it didn't show up on MRI. So rather than doing another MRI he has ordered a Nerve Conduction Study. He performed all the physical tests for the L5/S1 joint/sciatica? and all were positive for sciatica.I just feel so mad that I have had to jump through hoops and keep getting let down.How accurate is the NCS. If it is sciatica from the L5/S1 will it show definitely?