I have had multiple epidurals and pain free for only 1 1/2 days. I have 4 lumbar fusions and I was directed to a pain specialist who used Medtronic's electrodes & controller. My first surgery was a simple 5-6 day trail. I had 60-70% relief. It is all about location of the electrodes. Watching YouTube I found 5 videos that either the patient or Dr. was telling the story. Now, some Dr's wake you with a local and electrodes are in, at this point the Medtronic's Technician would turn on a generic signal with patient feedback. This allows for adjustment. I like this idea of diagnosing the root cause of your leg pain. But you must ask questions and educate yourself to explain to the Dr. best practices. Otherwise they are guessing the location based upon a medical chart and past experience. Do it right the first time and you will be happier. There are dozens of brands, just ask. It is outpatient surgery with 2 days of discomfort, but remember they can stop, remove the electrodes before they implant the stimulator. God Bless!