I am 7 weeks post surgery for my tpf and knee dislocation, with an additional 3 breaks to the fibula.
Yes, the sensations you are feeling are normal. Remember, our legs have been through a remarkable trauma, and those nerves and muscles are more than likely STILL trying to figure out what the hell happened!
It’s going to take time, and your leg is going to feel lots of different sensations for a long time. I spend an entire hour once looking for a rock between my toes because I FELT it…not because one was there. It was a nerve just acting odd.
Hang in there. Best of luck to you.