My father has back problems. (The extra 79-80 pounds he carries out in front probably contributes.) Two or three times he has "thrown his back out", whatever the technical medical term for his condition might be.
The worst of these, he spent the better part of a day face down between his bed and his dresser -- where he landed after rolling out of bed and feeling a "pop" -- before he would let my mother call some friends to help him up and get him to a doc.
They literally carried him into the chiropractor. My mother heard the crack and the scream from the waiting room, and ten minutes after he was wheeled back he walked out under his own power. With a cane, mind you, but vertical. And two days later you'd never know anything was wrong.
Was his the one extremely limited circumstance in which chiropractic is the right way to go? Possibly. But I don't doubt for a minute that it worked for him.