Can a chiropratictor really fix an irritated nerve in hip caused by the back?

The chiropractor wants me to come back 3 times a week for adjustments to fix my heavy leg and stiff lower back. All he did was pop my neck and then twist me around to pop my back. I don't understand how that's supposed to put everything back in place.
Can a chiropratictor really fix an irritated nerve in hip caused by the back?
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