The wounds of dog bite are routinely not sutured. I do not know why it was done in you. The numbness
in the legs mostly seems to be due to the wearing off effects of the numbing shot.
You will recover from it soon.
I assume you have taken the passive immunization
immunoglobulin as well as you had a bad and quite severe bite.
There is nothing that you need to do about the nerve damage
, as it is not that. The effect of the numbing shot will wear off soon and you will feel normal.
Hope this helps.
Wish you quick recovery.