I hate to be the bearer of bad news but "severe central stenosis" is not a good thing. From the report it states that there is a central superimposed disc herniation that is causing this condition. Many people with the same exact condition have different symptoms. In the low back there isn't a singular cord as it is in the upper back. It actually spreads like a horses tail, hence the name cauda equina. Dependent upon which of those nerves are being depressed it will vary from symptoms. I have a very similar finding at multiple levels and I have not undergone surgery, even tho they are adamant about it. My legs hurt all the time regardless of position. I told them they could operate when I could no longer hold my bowels or bladder. I have had multiple neck surgeries so a low back one isn't something I look forward too lol. Best of Luck!