I think that there some good chiropracters out there, but many quacks. My ortho doc, who replaced my left knee, has one in his building, along with a good spine surgeon. I have seen my ortho for this before a few years back. They both refer cases to this particular chiro. It may be coincidence, but when I had sciatica the first time, the ortho gave me a cortisone injection and after 3 days, I was no better and in a lot of pain, so he referred me to the chiro. He did some whamy jamy chiro stuff, no manipulations, and I left thinking it was a waste of time. Next day, complete recovery. Currently, I am improving with stretching and easy walking, am able to do my job without too much grouchiness, so I am holding off for now.
I have a friend who has had multiple spinal procedures for his recurring sciatica, and he feels stretching is the way to go.
As the old trappers used to say "there is more than one way to skin a 'cat".
Field trial this morning. Girls are chomping at the bit.

Onward and downward ;-)