Summary: There are not many books out there that deal strictly with sciatica issues. Of the few I've seen, this is clearly the most comprehensive and informative. While it comes up short on a few areas, it's a good read if sciatica pain is a part of your life.
I found this to be a helpful compendium of information, resources and techniques to deal with sciatica pain. It's heavy on the "why" issue, discussing at length the several factors that cause sciatica pain. It also provides a wealth of information concerning piriformis issues, a topic that is not discussed nearly as often as a causative factor (versus disc and spinal-based causes).
The second half of the book deals with controlling and curing sciatic problems. This was a bit of a disappointment for me, since I was expecting more "self-help" tools such as exercises and stretches that can help alleviate sciatica pain. There are some provided, but it's not nearly as much as I had hoped for. On the plus side, each exercise is described as to whether it is effective for a spinal-type issue or a piriformis issue. But, they are sparsely illustrated, mainly using text to describe something that clearly would benefit from a good series of illustrations.
Much of the control and cure portion of the book is dedicated to the various techniques used to control sciatica pain, such as physical therapy, medications, surgery and many others. It's good information, but with so many areas/techniques to cover, none are dealt with in as much detail as I would have wanted.
The overall writing style is clear, and there are many, many references cited for additional research.
It's a decent book if you're a sciatica pain sufferer (as I am). But, I found it to be a good book to check out from the library rather than purchase (unless you can get it used for a very low price). There's not much in the book that I wanted to refer to again and again to make it worth purchasing.