I suffered with this kind of pain for years and the only thing that has made any form of difference for me has been massage.
Tried physio, various painkillers etc etc and nothing made the slightest difference.
Massage was about the only thing i hadn't tried so thought what the hell and gave it a go, after about 3 sessions i was like a new man and have never been pain free for so long !!
Now whenever i feel a twinge or the start of any form of back pain i go back and have another massage session and that always sorts it out for me.
Not a guaranteed cure but deffo worth a shot !