thank you. i have a grade 1 L4-L5 anteriolisthesis and severe spinal cord stensois and moderate/severe bilateral foraminal stenosis. I was first diagnosed with spondylolitheses about 20 years ago. After a steroid epidural at that time I have been relatively pain and symptom free until about three weeks ago. Now it is very debilitating and painful. I am in the process of getting it worked up. I was looking to see more about the grading system. Couldn t find much to answer questions. How many grades are there? Is a grade 1 the least or most severe, etc. Which is my bigger problem, the spondy or the stenosis? i really hope I don t need to have surgery. Thank you. sorry, never mind. please do not proceed...i didn t realize there was a charge for this. thanks anyway. goodbye.