I had surgery for tarsal tunnel on both ankles, as well as nerve decompression on both legs at the outer knee area. Surgeon said all nerves were heavily compressed by fascia (hence my dx. of undifferentiated connective tissue disease)...HOWEVER, I also have had several back surgeries, one of them being at L5-S1, where I ended up with a fusion.

I'm wondering if, since you haven't had much pain relief from the tarsal tunnel surgery, the pain could be coming from your lower back. I know it is for me. All the t.tunnel surgery did for me was give me more motion/movement in my ankles/feet but did not do much to relieve actual "pain". I would encourage you to look into the possibility that the real culprit is low back stuff. If that's the case, then follow the road on that. Just a thought. Hope you find answers soon