I was wondering if there would be any sort of discussion regarding pain relief a la TENs unit approach, which I haven't tried, but it doesn't look to be part of

I was wondering if there would be any sort of discussion regarding pain relief a la TENs unit approach, which I haven't tried, but it doesn't look to be part of the article. Chronic lower back pain is such a market I kind of hope more devices keep getting created to address the issue. In fairness there's still a lot of barely substantiated / anecdotal evidence with most of the stuff out there (inversion therapy, TENs) and the one arena that should be helpful (chiro) but can be conflated with new-age rigmarole.