In preparing a second edition of this book I have found it necessary to rewrite several parts of it in order to keep pace with the progress made in certain aspects of the subject in the last few years. The advance made in our knowledge of the etiology has been notable and the views on treatment have Changed markedly since 1907 when the use of forcible correction was comparatively new. The German studies on the relation of scoliosis to school life have thrown a new light on the matter and a chapter has been added on that subject. I am again indebted to my colleagues for permission to use their material and I have not knowingly used the material of other men without proper acknowledgment.
{{comment.content}}