Xstop

Has anyone had an xstop?  With everything I read about it, it sounded like a miracle, they place titanium between the spinous portion and don't have to remove anything from the disc and doesn't bother the nerves. Information stated post op meds usually not necessary and full recovery from days to 2 wks.  I would have done anything for relief, but it's been 3 wks and I am no better and in pain all of the time with a lot of muscle spasms. Just spending 5 min on feet causes too much pressure. I think this surgery is used as minimally invasive with quicker recovery time but my body isn't cooperating.  I have searched the net to find any "negatives" but can't find one!  Just wondering, God Bless you all, I know this is a strong hill to climb.