I would give credit to the IVIG and Alans persistence. This is good news.
On nerves regenerating....I think some do and some dont...I think small fibers are the most likely to do so.
If you are squeamish----stop here!!!
I cut off the tip of my finger to the bone....every thing got cut, but the tendon on my index finger above the top joint. Right index finger...I was looking at bone and the tip of my finger hanging off that bone...that is called de-gloving. It is a very 'revealing' injury.
If I tell you how I did this promise not to laugh???

Do not attempt this.....professional stunt dummy trick.....
I did it kite skiing on a frozen lake

....I know now, there are somethings we truly get too old to do with a reasonable margin of safety.
I was fine until I saw the huge open spot of water in the ice....I downed my kite (which is the size of a parachute). Because I was a bit scared to be that close to the edge of ice...l took off my ski's backed up and gathered the kite by the strings...DUMB MOVE. I knew it was a dumb move...but it was a pricey kite....I wanted to keep it.
On gust of wind and bye bye finger....and bye bye kite.
To the ER via EMS....they just stictched it back together and said the nerves will grow back...at least the tendon is fine....they knew me by then...I had a few other adventures previously. This was my last one...by then I figured if I came in with another injury of adventurous etiology they would send me to the psych ward.
Anyway....the nerves did grow back, totally intact. You can not even see where the injury was, let alone feel it....
Oh and I got my kite back....it found a way to the marina....and we fished it out....now I fly it on dry land...oh and I bought one with a BRAKE.
I have settled down now to a more sedentary life....by necessity. I can't take that kind of excitement anymore.
My spinal nerve roots from my MVA...that is a whole other story....I wish it was the story of my finger...but it isn't.
Congratualtions Alan...I am glad your feet have "feelings...nothing more than feelings....I forget the rest of the lyrics to the song.....I will hummmm for you.