Thanks for that link it looks useful stuff I've just been given a device called PainGone that is incredibly effective Its well worth checking this link
http://www.hwize.com/health-pain-gone.html or just do a search on PainGone
I'm currently reroofing my house and have suffered with tendonitis torn ligaments /carteliges in fact I'm just about knackered, this device really does work and has kept me able to work 12+ hours aday