Last week I tested a neuralstimulator, that has two leads inserted stratigically into the spine that sends a gentle current into the painful area. For me it is the lower back and leg neuropathy. It felt like my leg was laying on a massage pad. Shortly, I will have it permanently istalled by my pain doctor so I can use therapy pool and live as normally as possible. The temporary installation aggrevated fibro in spine for first couple days, but when that quit flaring, everything felt pretty good. They can always be turned off or even removed. My brother in law has one and does not like it as he gets a "jolt" now and then, but I have talked to other people who are satisfied with the results. Everyone is different and your shoulder is different than a leg, but I wo ld at least check that option before getting nerves cauterized.