Prosthetic Design and Patellofemoral Function
In the early 1970’s, devices like the duocondylar knee were used to treat tibiofemoral arthritis, leaving the patellofemoral joint intact (22). Later that decade, the duopatellar and the total condylar knees (25, 14) replaced the patellofemoral joint as w
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I dedicate this book to my family, and to my teachers, Leonardo Gui and Michael Freeman
The roots of culture are bitter, but its fruit is sweet ARISTOTLE
Thomas P. Sculco
Ermanno A . Martucci (eds.)
KNEE ARTHROPLASTY
Springer-Verlag Wien GmbH
Thomas P. Sculco, M.D. Hospital for Special Surgery New York, NY, USA
Ermanno A. Martucci, M.D. Rizzoli Orthopedic Institute Bologna, Italy
Italian Edition by: TIMEO Editore s.r.l., Rastignano - Bologna (Italy) ISBN 88-86891-96-7 This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically those of translation, reprinting, re-use of illustrations, broadcasting, reproduction by photocopying machines or similar means, and storage in data banks. Product Liability: The publisher can give no guarantee for all the information contained in this book. This does also refer to information about drug dosage and application thereof. In every individual case the respective user must check its accuracy by consulting other pharmaceutical literature. The use of registered names, trademarks, etc. in this publication does not imply, even in the absence of specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. © 2001 Springer-Verlag Wien Originally published by Springer-Verlag Wien New York in 2001 Softcover reprint of the hardcover 1st edition 2001 Typesetting: ASLAY Fotocomposizione s.r.l., Rastignano, Bologna (Italy)
Printed on acid-free and chlorine-free bleached paper SPIN:10773095
With numerous Figures
ISBN 978-3-7091-7252-0 ISBN 978-3-7091-6185-2 (eBook) DOI 10.1007/978-3-7091-6185-2
Foreword
After a first phase of doubt, knee pro stheses like hip prostheses revealed their effectiveness with a more than 90% survival rate after 15 to 20 years. Currently, more than 200,000 knee prostheses are implanted annually in the United States, and about 20,000 knees are revised. The success of surgical treatment is essentially due to three factors: the correctness of surgical indications, the correct choice of the type of implant, and the correct surgical technique. The development of studies on biomechanics, on prosthetic design, and on material used, have led to the progressive evolution of implants, making them more and more suited to increasing the survival rate. If the criteria that guide surgical indications and surgical method are mostly standardized, the choice of the type of prosthesis and thus of prosthetic design, of the type of fixation and thus ofwhether or not to use cement, of whether or not to resurface the patella, regarding the retention or removal of the posterior cruciate ligament, are all related to the surgeon's experience. For this reason, the text takes into consideration the biomechanical features, indications, and surgical methods used in prostheses where there is preservation or sacrifice of the posterior cruciate ligament, and also of constraint models in case of severe instability of the periarticular soft tissue
