In reply to tmawer:
Following years of suffering with a loss of sensation in my left leg when walking, I had a laminectomy L4 - L5 and foraminotomy at L4 and L5 (left side) in 2020. The surgeon manage to screw up and touched the L5 nerve root which has left me with a permantently numb lower left leg and foot. 'Luckily' it's just the sensory nerve which is affected, the motor nerve is more or less OK, though my foot and calf lack strength. This means I can still climb but can't feel what I'm standing on. I find walking any distance very painful due to increasing problems at L3 level which some say is due to the surgery at L4 and L5.
Probably not what you wanted to hear, but if you can avoid surgery, I would. Try to exhaust all other options before deciding. And as coldfell said, an e-bike is the answer to the mobility problem.
Hope things work out, I know how you feel !
Post edited at 12:29