Hi Debi,
I have two SCS's, cervical and thoracic. My cervical SCS covers both hands, all the way up my arms and into my shoulders. Sometimes I feel it in the back of my head (which I love), but not in my neck (which I wish it covered). But I am not complaining, it gives pretty good coverage and has helped a lot.
The permanent implant has a much steadier stimulation than the trial did since the leads are more secure.
Glad your trial is going well.
Nanc