I can only comment on the Tens Unit for sciatic paiin. This thing seems to irritate the sciatic nerve even more for me. It made it get angrier even more than it already was!
I've had severe sciatica for 26 years, and even had the spinal cord stimulator implanted and THAT didn't even work!
The ONLY thing that has worked for me has been the medicatiions Opana combined with Lyrica. FINALLY I got some relief after all those years! It's been a God send = I had tried about every drug in the book, but only this combo has worked.
What a relief! I could have kissed my doc, but he might have gotten a bit upset. lol
I hope your Tens/juscle stim works for you. Will you PLEASE keep us posted about it? I'm sure it would help lots of other people. God bless and take care. Hugs, Lee