Hi, thanks for writing to HCM. It is very unlikely to have persistent numbness
in the legs even one year after surgery which is so incapacitating for you. I suspect some definite problem in your spine. I advise you to undergo MRI
scan of your lumbo sacral spine at the earliest as it will pick up the exact pathology that is troubling you. Consult a good spinal surgeon in your nearby vicinity.
Wish you a quick recovery.