Back pain is one of the most common complaints, yet it's notoriously difficult to treat. You may hear anecdotal stories about how they went to a X or took drug Y and got better, but there have been very few large scale studies that show the effectiveness of any treatment for most chronic back pain.
Here's an AP article that came out like not even a week ago about the over-treatment and inability of Western medicine to solve back pain issues:
http://www.google.com/hostednews/ap/..._nsRgD9G769OO0
It sucks when you pay to see a doctor and they just hand you some motrin, but there's very little medical literature to support any particular treatment definitively. It's pretty much 'treat the symptoms' I think. Constrast this with like diabetes or congestive heart failure where you can find 100s of meta-analysis on statistically proven treatments.