@retired123, Correction to my post above - the research scientist that gave us a presentation on the new product at the time was Lars Oddsson, PhD associated with Boston University (https://cse.umn.edu/tli/lars-oddsson-phd). Here's a really good review and patient's perspective. Hopefully any members that may be using it will respond also.
https://youtu.be/qQ7G1XXwhPk

I have PN due to spinal issues, numbness, tigling, weakness right lower leg, impaired balance, some difficulty walking.I read about the Walkasins on the PNF website, called the company, found out the closest practice I could be evaluated at (2 hrs away), made the appointment and went to be evaluated. The evaluation went well, the PT attached the Walkasins and off I went. There is a small zap as you walk along, but I couldn’t determine any improvement. The PT said outright- “You need a gait analysis”. I was scheduled at a different clinic. The gait analysis is done with special shoe inserts that send info to a computer the PT manages. There were all sorts of graphs- very interesting. That PT said I needed adaptive shoes. I googled “Dick’s Sporting Goods” near me, went and bought a pair of Brooks, brought them back to the practice, and came back when they were done. It was like a miracle! I was landing flat without any push-off on that foot, he embedded a metal rocker which gives me a mechanical push-off. It’s like night and day walking now- much more stable, much less effort.