The author is already for several years known as a first-class researcher in the field of biomechanics of the back. From this book we can learn that he is also very familiar with the clinical practice.
Many times it is heard that 85% of the back problems is of unknown origin. This book shows this to be untrue: at it best the statement reflects insufficient diagnosis. There are a great number of pahological mechanisms leading to back pain. Few of them can be diagnosed from an X-ray, but they can be differentiated by a careful anamnesis and diagnosis and so lead to a suitable treatment.
On the basis of a state-of-the-art biomechanical model the author is able to evaluate many existing treatments and prevention programs. It is shown that many current treatment programs are good in part, but in other part incorrect or even harmful. For example, flexibility exercises or power training are definitely harmful. I wonder how the physiotherapy world will react on it.
Finally, a good point of the book is its clear and emphatic personal style.