I avoided the stimulator test and procedure. First I tried a portable tens unit and that aggravated the pain in my left shoulder and neck. If you want to use your arm more the leads will shift as these devices are used primarily for the spine and lower back. I was told there would be a chance to regain pain free use of my arm and possibly play golf again. It was tempting but I realized they were telling me what I wanted to hear. I've concluded nothing yet exists yet to help us use the affected arm in a pain free manner.
bob