Numbness, dopey feeling in foot 2 yr post triple arthodesis?

Hi,
I'm new to t his group in hopes of finding anyone who has had a numbness, dopey feeling in foot following a triple arthodesis 2 yrs post surgery? It just feels like it could give out and unstable due to the sensation. I am really frustrated and becoming very depressed. Sent to back Dr to see if it was stenosis of lower back but I honestly think it is scar tissue pressing on a nerve? Anyone out there experience this? Thank-you for your time,
Paula