I don't think Eluned is PG.... unless she's keeping something a secret?!

I use a machine similar to a tens for back pain. It is an inferential electrode device. I LOVE it. I am looking at purchasing one but they are around $300. They can also be used for muscle toning. My physio recommends them for all sorts of injuries. I've used it on my knee before but have the most success on my back (I have slipped discs) - it's great for beating the spasms!