Previous studies of human knee motion are based on finite rotation data collected using large rotation steps varying from 5 to 30 degrees. In some cases this rotation data is used to develop axes of rotation for the joint. For such analysis, the rotation axis developed may be significantly different from the joint's instantaneous axis of rotation because, in general, the axis of rotation developed using finite rotation steps only closely approximates the true instantaneous axis of rotation if the step size is small. For the current study, a device has been developed to record high frequency (15 Hz) rotation and translation data of the femur and tibia during knee flexion. Kinematic constraint equations have been developed to analyze the six degree of freedom rotation and translation data to obtain an accurate approximation to the instantaneous axis of rotation. Four cadaveric knees were II analyzed with all ligaments intact. Motion characteristics common to all knees were identified. The most obvious characteristic, internal tibial rotation, was related to the initial varus/valgus orientation of each knee. The anterior cruciate ligaments (ACL) of these same knees were subsequently severed, the knees were measured, and the motion analyzed. Differences in the motion characteristics of each knee were detected alter the ACL was cut.

A quantitative approach to studying human biomechanics, presenting principles of classical mechanics using case studies involving human movement. Vector algebra and vector differentiation are used to describe the motion of objects and 3D motion mechanics are treated in depth. Diagrams and software-created sequences are used to illustrate human movement.

The widespread occurrence of the various forms of arthritis not only results in a great waste of manpower, but also causes immeasurable pain and suffering for the patients. Due to the limited understanding of its etiology, the currently available treatments are directed at the effects of the disease rather than its causes. The solutions available to the clinician at the advanced stages of arthritis are frequently surgical and include prosthetic replacement arthroplasty. Many advances have been made in the last decade in the basic understanding of the kinematics and kinetics of anatomical joints, as well as in the technology of joint replacement. The NATO Advanced Study Institute held in Portugal during June 20-July 1, 1983 addressed these topics and provided instruction on the advances in biomechanics of diarthrodial joints. The proceedings of this Institute are presented in this volume. Many different areas of specialization contribute to the field of joint biomechanics. Due to the complexity of each individual topic, it was not attempted here to present a complete treatise of each of these areas. Each chapter typically gives a review and a flavor of the subject matter, as well as discussing the state-of the-art advances in general or in specific research areas. Some of the chapters, such as those on lubrication and muscle mechanics, are more mathematically oriented than the others. Nevertheless, the reader with a non-engineering background, I trust, would still find most of the book informative and easy to read.

Human Orthopaedic Biomechanics: Fundamentals, Devices and Applications covers a wide range of biomechanical topics and fields, ranging from theoretical issues, mechanobiology, design of implants, joint biomechanics, regulatory issues and practical applications. The book teaches the fundamentals of physiological loading and constraint conditions at various parts of the musculoskeletal system. It is an ideal resource for teaching and education in courses on orthopedic biomechanics, and for engineering students engaged in these courses. In addition, all bioengineers who have an interest in orthopedic biomechanics will find this title useful as a reference, particularly early career researchers and industry professionals. Finally, any orthopedic surgeons looking to deepen their knowledge of biomechanical aspects will benefit from the accessible writing style in this title. - Covers theoretical aspects (mechanics, stress analysis, constitutive laws for the various musculoskeletal tissues and mechanobiology) - Presents components of different regulatory aspects, failure analysis, post-marketing and clinical trials - Includes state-of-the-art methods used in orthopedic biomechanics and in designing orthopedic implants (experimental methods, finite element and rigid-body models, gait and fluoroscopic analysis, radiological measurements)

This book presents essential information on the various concepts of biomechanics and kinesiology applied to human body, also describing in depth the understanding of the various physical and mathematical principles applied towards understanding of this science of movement. It tries to simplify this biological movement science by facilitating easy understanding of the various applications of the forces acting on the human body. This book provides a deep insight to the clinical gait analysis and it’s interpretations with graphical outputs, it also covers important topics such as biomechanics of important human joints such as neck, shoulder, spine, hip, knee and ankle with their recent advances. It also includes chapters on biomechanical instrumentation and their interpretation. Another highlight of the book is chapters on biomechanical motion analysis systems used for athletes. This book offers a valuable resource for medical and paramedical students, researchers and clinicians practicing musculoskeletal and manual therapy, aiding researchers gaining insight to human biomechanics.

"Take away my knee pain and give me better motion". This is what the arthritic patient expects from a Total Knee Arthroplasty (TKA). By virtue of standardization of the TKA procedure, surgeons can nowadays solve the pain issue for the majority of the patients. Restoration of function is a goal of a different order and forms the scope of this book. The editors confronted today's leading knee surgeons with the limitations of current surgical techniques and technology. They challenged them to define new thresholds of functional capacity after Total Knee Arthroplasty. "A Guide to Get Better Performance in TKA" describes the cutting edge in surgical techniques, prosthetic design and achievement of excellent function for these patients.