Part 1 book “Principles of osteoarthritis – Its definition, character, derivation and modality-related recognition” has contents: Epidemiology and biomechanics of osteoarthritis, symptoms, signs and quality of life (qol) in osteoarthritis (oa), the application of imaging in osteoarthritis, biomarkers and ultrasound in the knee osteoarthrosis diagnosis, and other contents. | PRINCIPLES OF OSTEOARTHRITIS – ITS DEFINITION, CHARACTER, DERIVATION AND MODALITY-RELATED RECOGNITION Edited by Bruce M. Rothschild Principles of Osteoarthritis – Its Definition, Character, Derivation and Modality-Related Recognition Edited by Bruce M. Rothschild Published by InTech Janeza Trdine 9, 51000 Rijeka, Croatia Copyright © 2012 InTech All chapters are Open Access distributed under the Creative Commons Attribution license, which allows users to download, copy and build upon published articles even for commercial purposes, as long as the author and publisher are properly credited, which ensures maximum dissemination and a wider impact of our publications. After this work has been published by InTech, authors have the right to republish it, in whole or part, in any publication of which they are the author, and to make other personal use of the work. Any republication, referencing or personal use of the work must explicitly identify the original source. As for readers, this license allows users to download, copy and build upon published chapters even for commercial purposes, as long as the author and publisher are properly credited, which ensures maximum dissemination and a wider impact of our publications. Notice Statements and opinions expressed in the chapters are these of the individual contributors and not necessarily those of the editors or publisher. No responsibility is accepted for the accuracy of information contained in the published chapters. The publisher assumes no responsibility for any damage or injury to persons or property arising out of the use of any materials, instructions, methods or ideas contained in the book. Publishing Process Manager Vana Persen Technical Editor Teodora Smiljanic Cover Designer InTech Design Team First published February, 2012 Printed in Croatia A free online edition of this book is available at Additional hard copies can be obtained from orders@ Principles of Osteoarthritis –