. I just researched it quickly and looked at a few web site on the pain sheild to me it sounds and looks like a tens unit . I have heard some people find it helps. others say just the reverse. I dont see what it would hurt for you to try it before moving on to another option or surgery. I say if you can try it ..try it cus it may help.
PEACE
BMW

p.s. The pain sheild sound like a baby pns unit... it is on the outside pns is underneath the skin but the same basic idea. just smaller more simple weaker form of stimulation to the area..... that what it seems or looks like in an odd way if that makes any sense .??