Agreeing with Masona, my dad sees a chiropractor, and seems to need a few appointments a year: doesn't seem to be a permanent fix.
However disagreeing with that, my mum saw the very same practitioner with a hip problem, and one appointment sorted her out fully.
So it would seem that it depends on the person and/or the complaint as to what is successful.
On occasion I get an ache in my back, I find stretching helps, especially when lying on the floor.