My TKR was 13+ months ago. My foot was so numb and tingle (asleep Basicly) that it buckled when I tried to stand and hurt terribly! My Dr told me it was normal give it at least a year. Not satisfied I kept prosueing and 6 weeks later my primary said Not normal. Did an ABI test (a pressure test on legs) came back .4 other leg 1.6. Sent for an angiogram which detected a pinched Popliteal Artery (main artery that supplies blood to your lower leg). It was pretty obvious, my foot was cold and toes purple. After the artery was opened, warm foot pink toes!. But since it was 6 weeks between surgeries I have nerve, tissue, and cell damage which might come back or NEVER come back. Now told 3+ years to wait and see. All my TKR Dr told me I was lucky most people that this happens to loose their leg!
So get an ABI test done. Its simple and does not hurt. I just wish my Dr would of listened to me after my surgery instead of telling me it was normal. Nothing like that is normal.
I wish you the best of luck with your foot.

Hello
I have the very same problem. I woke up from surgery and had numbness on the bottom of my foot on the lateral side (baby toe side), in the arch area, and the total heel. When I walk if feels like there is a pad under my arch. I really don’t have pain but the feeling in the arch area is very annoying. Surgeon and PT techs have never heard of this. I’m 8 months post surgery and after visiting my surgeon March 16th 2020 I have been scheduled for a nerve study to try and determine nerve damage. I can only keep praying that my foot will be normal again. BTW I had a spinal block not general Anesthetic. What anesthetic did you have?