@ccchang
Hi, Sorry to hear about your foot and calf numbness. It sounds similar. Do you get pain when placing weight of your foot? I have three symptoms. One is the numbness, two is occasional electric shocks lasting 5 secs to 1 min, and the third is weight-bearing pain. The third is definitely the worst and life changing.
To answer your question:
1) Prior to my surgery I had no numbness or pain in the right foot. 24 hours after the surgery, the big toe felt a little numb and then that expanded over the next couple of months. The day after the surgery the surgeon said he was surprised that I had conjoined nerves (two nerves where there should be only one). Also, he kept saying the foot issue was normal and all going according to plan. Which didn't make sense to me and I sensed he was nervous about the whole situation.
2) MRI shows that very clearly, which was pointed out to me by the radiologists and surgeons who reviewed the images.