I'm so sorry you are still having the pain and numbness. I had both of my knees done 4 months apart. With the first one, done Oct of 2018, I woke up with tingling in my foot. It feels like when your foot is asleep all of the time! I still have it a year later...no answers for me either and no one knows if it will ever get better. So frustrating! I was so nervous about having the second knee done after that experience with the first, but it was not a problem at all with the second one. That one is coming up on a year out next month. Prayers that you find answers and hopefully a solution!