Foot And Ankle Motion Analysis
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Foot And Ankle Motion Analysis
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Author : Gerald F. Harris
language : en
Publisher: CRC Press
Release Date : 2007-08-22
Foot And Ankle Motion Analysis written by Gerald F. Harris and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-08-22 with Medical categories.
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
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Author : Benjamin Donald McHenry
language : en
Publisher:
Release Date : 2001
Foot And Ankle Motion Analysis Using Dynamic Radiographic Imaging written by Benjamin Donald McHenry and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Ankle categories.
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
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Author : William Ledoux
language : en
Publisher: Academic Press
Release Date : 2022-12-05
Foot And Ankle Biomechanics written by William Ledoux and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-12-05 with Science categories.
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
Human Motion Analysis
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Author : Gerald F. Harris
language : en
Publisher: Institute of Electrical & Electronics Engineers(IEEE)
Release Date : 1996
Human Motion Analysis written by Gerald F. Harris and has been published by Institute of Electrical & Electronics Engineers(IEEE) this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Medical categories.
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.
The Biomechanics Of The Foot And Ankle
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Author : Robert Donatelli
language : en
Publisher: F. A. Davis Company
Release Date : 1995
The Biomechanics Of The Foot And Ankle written by Robert Donatelli and has been published by F. A. Davis Company this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Medical categories.
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
Lower Extremity Biomechanics
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Author : Stephen F. Albert, D.P.M., C.Ped., FACFAOM
language : en
Publisher: Bipedmed, LLC
Release Date :
Lower Extremity Biomechanics written by Stephen F. Albert, D.P.M., C.Ped., FACFAOM and has been published by Bipedmed, LLC this book supported file pdf, txt, epub, kindle and other format this book has been release on with Medical categories.
Biomechanics is the study of the human body and how it behaves mechanically. This textbook is intended for all who have an interest in how our feet and legs work and particularly for those in the health care community who must remain abreast of the latest information and research. Written by leaders in the field, this books covers in detail current theoretical and applied concepts. You will find Lower Extremity Biomechanics: Theory and Practice Volume 1 a welcomed addition to your professional library.
Pediatric Gait
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Author : Shriners Hospitals for Children
language : en
Publisher: Institute of Electrical & Electronics Engineers(IEEE)
Release Date : 2000
Pediatric Gait written by Shriners Hospitals for Children and has been published by Institute of Electrical & Electronics Engineers(IEEE) this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Medical categories.
Theses conference proceedings cover subjects pertaining to clinical care and motion analysis technology.
A Clinical System For The Analysis Of Pediatric Foot And Ankle Motion
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Author : Gautam Sampath
language : en
Publisher:
Release Date : 1998
A Clinical System For The Analysis Of Pediatric Foot And Ankle Motion written by Gautam Sampath and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Ankle categories.
Gait Analysis
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Author : Michael W. Whittle
language : en
Publisher: Butterworth-Heinemann
Release Date : 2014-05-12
Gait Analysis written by Michael W. Whittle and has been published by Butterworth-Heinemann this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-12 with Medical categories.
Gait Analysis: An Introduction focuses on the systematic study of human walking and its contributions in the medical management of diseases affecting the locomotor system. The book first covers normal gait and pathological gait. Discussions focus on common pathologies affecting gait, amputee gait, walking aids, particular gait abnormalities, gait in the elderly and the young, moments of force, energy consumption, gait cycle, muscular activity during gait, and optimization of energy usage. The manuscript then elaborates on the methods of gait analysis, including visual gait analysis, general gait parameters, timing the gait cycle, direct motion measurement systems, electrogoniometers, electromyography, accelerometers, gyroscopes, and force platforms. The publication tackles the applications of gait analysis, as well as clinical gait and scientific gait analysis, normal ranges for gait parameters, conversions between measurement units, and computer program for general gait parameters. The manuscript is a valuable source of data for students of physical therapy, bioengineering, orthopedics, rheumatology, neurology, and rehabilitation.
Contributions To Contact Simulation And Human Motion Analysis
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Author : Farnood Gholami
language : en
Publisher:
Release Date : 2016
Contributions To Contact Simulation And Human Motion Analysis written by Farnood Gholami and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
"This thesis contains contributions to contact simulation and human motion analysis. Effects of the foot and ankle modelling techniques on the foot kinematics and dynamics are investigated. The analyses are carried out based on experimental data obtained using a motion capture system. The appropriateness of modelling the human ankle joint based on a stationary axis of rotation is investigated and a technique is also proposed which is capable of predicting the directional changes of the ankle axis during the foot flexion. Furthermore, two main modelling assumptions related to the number of the foot segments and the dimension of the foot model were the subject of the foot dynamics analyses. Effects of these modelling assumptions on the ankle joint torque and power are determined. A framework was developed which quantifies the gait abnormality of multiple sclerosis (MS) patients using a Kinect camera. The reliability of such a framework in assessing gait parameters in MS patients is evaluated based on captured data by Kinect. Also, a novel set of MS gait indices based on the concept of dynamic time warping is introduced whichcan characterize a patient's gait pattern and quantify the subject's gait deviation from the healthy population. In the second part of the thesis, two algorithms, namely, the accelerated-box and the generalized inverse-based algorithms, were developed for contact dynamics simulation. The accelerated-box algorithm improves the simulation of rigid body contact problems, in particular when the system under consideration has redundant constraints. The mathematical formulation is expressed in terms of a mixed linear complementarity problem (MLCP). The accelerated-box approach is partly motivated by the box friction model which is one of the existing approaches to solve contact problems. The original box friction model suffers from certain drawbacks in the presence of a large number of contact points such as long computational time, divergence problems, and instability. On the other hand, the accelerated-box approach developed in this thesis overcomes such drawbacks by taking advantage of the sparse structure of the lead matrix of the MLCP. This new method reduces the sensitivity of the solution to the constraint relaxation terms and decreases the number of required pivots to obtain the solution, and hence, shorter computational times result. This approach accordingly suggests a more reliable method for real-time simulation of multibody systems. A method based on the use of the Moore-Penrose generalized inverse was developed to deal with systems with redundant contacts. This approach omits the necessity of relaxing the constraints when redundancy exists in the system. To develop such a method, the generalized inverse is incorporated inside the pivoting steps of the MLCP solver. The method is very stable and robust, and its computational time is considerably smaller than the counterpartmethods, specially for highly redundant systems. Finally, a novel complementarity problem formulation is introduced. In this formulation, contacts are characterized based on constraints for normal direction while friction forces are simultaneously regularized and incorporated into the formulation. The dimension of such a formulation is significantly lower in comparison with counterpart formulations in the literature. Redundant constraints can be handled via relaxing the constraints. The proposed regularized formulation is examined for benchmark examples and results show acceptable agreement with the expected behaviours, while the computational time is considerably reduced in comparison with other formulations in the literature. This formulation could be a useful and practical choice for real-time simulation of complex mechanical systems." --