When I had my disc go the first time, I found cycling was about the only way I could get about. I think being on the bike helped to stretch my back and aliviate the pain. The biggest problem was getting on the bike in the first place.
To highlight the question above, check waterworks operate properly. Some long term nerve damage is not unusual but I wouldn’t expect it to be totally numb.
I was back cycling within 2 months of being operated on.