Foot and Ankle Motion Analysis


Book Description

Human motion analysis or gait analysis is used throughout the country and the world in clinics for pre-surgical planning and postsurgical follow-up. Only recently have technological advances truly begun to meet medical needs by supplying more accurate analytical data from which to make educated assessments of dynamic foot and ankle pathology. A com




Foot and Ankle Motion Analysis Using Dynamic Radiographic Imaging


Book Description

Lower extremity motion analysis has become a powerful tool used to assess the dynamics of both normal and pathologic gait in a variety of clinical and research settings. Early rigid representations of the foot have recently been replaced with multi-segmental models capable of estimating intra-foot motion. Current models using externally placed markers on the surface of the skin are easily implemented, but suffer from errors associated with soft tissue artifact, marker placement repeatability, and rigid segment assumptions. Models using intra-cortical bone pins circumvent these errors, but their invasive nature has limited their application to research only. Radiographic models reporting gait kinematics currently analyze progressive static foot positions and do not include dynamics. The goal of this study was to determine the feasibility of using fluoroscopy to measure in vivo intra-foot dynamics of the hindfoot during the stance phase of gait. The developed fluoroscopic system was synchronized to a standard motion analysis system which included a multi-axis force platform. Custom algorithms were created to translate points of interest from 2D fluoroscopic image space to global tri-axial space. From these translated points of interest, a hindfoot specific model was developed to quantify sagittal plane talocrural and subtalar dynamics. The new hindfoot model was evaluated and applied to a pilot population of thirteen healthy adults during barefoot and toe-only rocker walking conditions. The barefoot kinematic and kinetic results compared favorably with barefoot dynamics reported by other authors. As a result of the barefoot study, it was concluded that inter-subject variability in sagittal plane kinematics was higher for the talocrural joint than the subtalar joint. The toe-only rocker analysis was the first report of hindfoot kinematics within a rocker sole shoe modification. Hindfoot kinematic inter-subject variability was significantly lower in the toe-only rocker condition when compared to barefoot results. This study represents the first use of fluoroscopy to quantify in vivo intra-foot dynamics during the stance phase of gait. Talocrural and subtalar dynamics of healthy adult subjects are reported. The technology developed for this study is capable of examining soft tissue and bony abnormalities associated with the pathologic foot. Based on the overall results of this study, it is recommended that development continue for further analysis within the clinical environment, and examination of complex in vivo foot and ankle dynamics.




Foot and Ankle Biomechanics


Book Description

Foot and Ankle Biomechanics is a one source, comprehensive and modern reference regarding foot and ankle biomechanics. This text serves as both a master reference for foot biomechanics, presenting a clear state of the research and capabilities in the field. The customers for this book will be those looking for information on foot and ankle biomechanics for a range of applications; for example, designers of orthotics. - Provides a comprehensive overview of the science of foot and ankle biomechanics that is presented in an easily accessible format - Presents normative data and descriptions relating to the structure and function of the foot and ankle, along with comparisons to pathological conditions - Includes multimedia content to support modeling and simulation chapters




The Biomechanics of the Foot and Ankle


Book Description

A comprehensive text on the anatomy, pathomechanics, and treatment of the foot and ankle, for students and clinicians. It contains 13 chapters in three sections: biomechanics of the foot and ankle, biomechanical evaluation, and treatment approaches to restore normal movement. This revised and updated edition (first was 1990) deliberates on the concept of the foot as an important part of the lower kinetic chain. Two new chapters have been added, on closed kinetic chain and gait, and on the application of kinetic chain rehabilitation in the lower extremities. Annotation copyright by Book News, Inc., Portland, OR




Human Motion Analysis


Book Description

This text is designed to address current applications and future directions in human motion analysis. It has been written to convey basic as well as advanced concepts to engineers (Part I) and clinicians (Part II). Part I presents current and emerging concepts in motion analysis technology. Part II addresses the important aspects of clinical data interpretation and decision making with numerous examples.




Core Topics in Foot and Ankle Surgery


Book Description

This concise guide offers an ideal overview of both the practical and theoretical aspects of foot and ankle surgery for trainees and junior consultants. Easy to read chapters cover all areas of surgery, from examination, imaging, and the biomechanics of the foot and ankle, to specific conditions including amputations and prostheses, deformities, arthritis, cavus and flat foot, sports injuries, Achilles tendon, benign and malignant tumors and heel pain. Fractures and dislocations of the ankle, hind-, mid- and forefoot are also covered, as are the foot in diabetes and pediatrics. Written by a team of international experts, the text is an accessible way to prepare for postgraduate examinations and manage patients successfully.




Gait Analysis


Book Description

The extensive and ground-breaking work of Dr. Jacquelin Perry is encompassed and detailed in the world renowned text, Gait Analysis: Normal and Pathological Function. The medical, healthcare, and rehabilitation professions key text for over 18 years on gait.... Now available in a much anticipated New Second Edition Dr. Jacquelin Perry is joined by Dr. Judith Burnfield to present today's latest research findings on human gait. Gait Analysis, Second Edition has been updated and expanded to focus on current research, more sophisticated methods, and the latest equipment available to analyze gait. What is New: • A new chapter covering running • Synergy of motion between the two limbs • A new chapter covering pediatrics • A new chapter covering stair negotiation • New and updated clinical examples • A section on power inside each chapter covering normal gait • New methods and equipment to analyze gait This Second Edition to Gait Analysis offers a re-organization of the chapters and presentation of material in a more user-friendly, yet comprehensive format. Essential information is provided describing gait functions, and clinical examples to identify and interpret gait deviations. Learning is further reinforced with images and photographs. Features: • Six sections cover the fundamentals, normal gait, pathological gait, clinical considerations, advanced locomotor functions, and gait analysis systems • Clinical significance of the most common pathological gait patterns • Over 470 illustrations and photographs, as well as 40 tables • Patient examples to illustrate elements of normal and pathological gait Tens of thousands of orthopedic, orthotic and prosthetic, physical therapy, and other rehabilitation professionals have kept a copy of Gait Analysis by their side for over 18 years...join the thousands more who will bring the Second Edition into their clinics, classrooms, and personal collections.







Handbook of Human Motion


Book Description

The Handbook of Human Motion is a large cross-disciplinary reference work which covers the many interlinked facets of the science and technology of human motion and its measurement. Individual chapters cover fundamental principles and technological developments, the state-of-the-art and consider applications across four broad and interconnected fields; medicine, sport, forensics and animation. The huge strides in technological advancement made over the past century make it possible to measure motion with unprecedented precision, but also lead to new challenges. This work introduces the many different approaches and systems used in motion capture, including IR and ultrasound, mechanical systems and video, plus some emerging techniques. The large variety of techniques used for the study of motion science in medicine can make analysis a complicated process, but extremely effective for the treatment of the patient when well utilised. The handbook descri bes how motion capture techniques are applied in medicine, and shows how the resulting analysis can help in diagnosis and treatment. A closely related field, sports science involves a combination of in-depth medical knowledge and detailed understanding of performance and training techniques, and motion capture can play an extremely important role in linking these disciplines. The handbook considers which technologies are most appropriate in specific circumstances, how they are applied and how this can help prevent injury and improve sporting performance. The application of motion capture in forensic science and security is reviewed, with chapters dedicated to specific areas including employment law, injury analysis, criminal activity and motion/facial recognition. And in the final area of application, the book describes how novel motion capture techniques have been designed specifically to aid the creation of increasingly realistic animation within films and v ideo games, with Lord of the Rings and Avatar just two examples. Chapters will provide an overview of the bespoke motion capture techniques developed for animation, how these have influenced advances in film and game design, and the links to behavioural studies, both in humans and in robotics. Comprising a cross-referenced compendium of different techniques and applications across a broad field, the Handbook of Human Motion provides the reader with a detailed reference and simultaneously a source of inspiration for future work. The book will be of use to students, researchers, engineers and others working in any field relevant to human motion capture.




Total Ankle Arthroplasty


Book Description

Increasing success of arthroplasty of joints like the hip and knee along with concerns about the long-term outcomes of ankle arthrodesis has renewed interest in ankle arthroplasty. The new implants have been designed with attention to reproducing normal ankle anatomy, joint kinematics, ligament stability, and mechanical alignment. This publication will be the first comprehensive atlas on this topic and offers a unique physiological and mechanical characteristics of the ankle joint and of the selected total ankle system. Furthermore it will greatly enhance one’s knowledge of this dynamic field and stimulate the scientific approach to management of end-stage arthritis of the ankle. It reflects the author’s accumulated experience of the last decade with extended laboratory work on biomechanics of the ankle joint complex and more than 350 total ankle procedures. The atlas is well illustrated with many impressive figures, drawings and coloured pictures.