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Dissertations / Theses on the topic 'Deformities of the ankle joint'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Nicolopoulos, Christos. "Evaluation of the treatment of foot deformities using foot orthoses." Thesis, University of Strathclyde, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.344073.

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2

List, Renate Barbara. "Joint kinematics of unconstrained ankle arthroplasties /." [S.l.] : [s.n.], 2009. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=18404.

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3

Weiss, Patrice Lynne. "Position dependence of ankle joint dynamics." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=72042.

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The objective of the work that comprises this thesis was to examine the position-dependent behavior of the human ankle joint dynamics. A series of experiments based on the use of system identification techniques were carried out; the experimental stimulus consisted of small-amplitude, stochastic perturbations of the ankle. The response to this input was modulated by two, experimentally-controlled parameters: tonically-maintained mean joint angles and tonically-maintained triceps surae or tibialis anterior contractions. This permitted the identification of the dynamic response of the torque (pa

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4

Vasquez, Rebecca (Rebecca Ann). "Simulating control of the ankle joint." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/74912.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 33).<br>Computing environments such as Matlab that are conventionally used to simulate dynamics of rigid body systems can be used to model interactions between the system and its environment. However, creating these simulations using Matlab or an equivalent is difficult and there is a need for a more convenient simulation environment for such problems. Two alternative programs, PyODE and OpenSim, were explored to evalua

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5

Kuganenderan, Nivedah. "Biotribology of the natural ankle joint." Thesis, University of Leeds, 2018. http://etheses.whiterose.ac.uk/22101/.

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The ankle joint is a stable and congruent joint that helps to protect the joint surfaces from high impact forces. However, possible trauma to the joint such as severe ankle sprain or fracture can cause cartilage breakdown and eventually lead to cartilage degeneration, resulting in arthritis. Ankle arthritis is considered to be a major cause of morbidity and disability. Although the ankle joint is least affected by arthritis compared to knee and hip joints, the pain and lack of mobility of end stage ankle osteoarthritis (OA) are equally debilitating and tend to be overlooked compared to hip and

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6

Wholohan, Aaron J. "An investigation into the immediate effects of ankle joint mobilisation in people with ankle equinus." Thesis, Queensland University of Technology, 2019. https://eprints.qut.edu.au/134467/1/Aaron%20J.%20Wholohan%20Thesis.pdf.

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Ankle equinus is a limitation in ankle dorsiflexion, which has been clinically associated with impaired balance and lower limb pathology in adults. This thesis investigated the immediate effects of ankle mobilisation on balance performance, plantar pressures, muscle activity and ankle movement in people with ankle equinus. Through a series of carefully controlled studies, this thesis identified considerable variation in the force applied during ankle mobilisation. Although the findings suggest that mobilisation may result in improvements in patient-reported outcomes, it also questions the rati

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7

Leardini, Alberto. "Geometry and mechanics of the human ankle complex, and ankle prosthesis design." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343530.

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8

Murphy, Norman. "Ankle and subtalar joint kinematic description using stereophotogrammetry." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61674.

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9

Zhao, Yong. "Identification of ankle joint stiffness using subspace methods." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=86800.

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Studying joint stiffness against a compliant load is a difficult problem because the intrinsic and reflex torques cannot be measured separately experimentally. Moreover, the joint stiffness is operated within a closed loop because the ankle torque is fed back through the load to change the ankle position. In this thesis, a state space model for ankle joint stiffness is developed. Then, a discrete-time, subspace-based method is used to estimate this state space model for overall stiffness. By using appropriate instrumental variables, the subspace method can estimate the state space model

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10

Gatt, Alfred. "Biomechanical assessment of passive ankle joint complex dorsiflexion." Thesis, Staffordshire University, 2012. http://eprints.staffs.ac.uk/1991/.

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The measurement of ankle joint dorsiflexion is an important component of the clinical examination of the foot and is also an outcome measure often employed in research. Diagnosis of ankle equinus or limited ankle dorsiflexion is based solely on this measurement. Although a great majority of research papers in this field utilise normal clinical goniometers for obtaining the maximum ankle dorsiflexion angle (MADA) and important clinical decisions are based on these findings, there is overwhelming evidence that this method is highly unreliable. Thus this thesis aimed to investigate alternative me

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11

Millington, Steven Andrew. "Quantitative stereophotogrammetric & MRI evaluation of ankle articular cartilage and ankle joint contact characteristics." Thesis, University of Nottingham, 2008. http://eprints.nottingham.ac.uk/10484/.

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Osteoarthritis and degenerative cartilage diseases affect millions of people. Therefore, there is huge interest in developing new therapies to repair, replace and/or regenerate cartilage. This necessitates advances in techniques which make earlier non-invasive diagnosis and objective quantitative evaluations of new therapies possible. Most previous research has focused on the knee and neglected the ankle joint. Hence, the aims of this thesis are to describe and quantify the geometric properties of ankle cartilage, to evaluate joint contact characteristics and develop techniques which allow qua

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12

North, Ian Graham. "First metatarsophalangeal joint range of motion : influence of ankle joint position and gastrocsoleus muscle stretching." University of Western Australia. School of Surgery, 2008. http://theses.library.uwa.edu.au/adt-WU2009.0021.

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[Truncated abstract] First metatarsophalangeal joint (MTPJ1) motion is an important factor in normal weight transference during walking. Disruptions to normal range can influence joints both proximal and distal to the MTPJ1, potentially leading to pain and dysfunction. Whilst the MTPJ1 has been investigated significantly, the numerous methodologies described to quantify range of motion can be questioned and makes comparisons difficult. Range of MTPJ1 motion is commonly assessed in a clinical setting to determine pathology as well as to make decisions on appropriate intervention. The anatomical

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13

Näslund, Annika. "Dynamic ankle-foot orthoses in children with spastic diplegia : interview and experimental studies /." Luleå : Division of Physiotherapy, Department of Health Sciences, Luleå University of Technology, 2007. http://epubl.ltu.se/1402-1544/2007/11/.

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14

Sopher, Ran Salach. "Muscle architecture, loading and joint replacement of the ankle." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/48939.

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The use of total ankle replacement (TAR) for treatment of arthritis is rapidly increasing, but survival rates are of major concern. The primary indication for TAR revision is implant loosening, which is linked with inadequate primary stability manifested in higher levels of initial implant-bone micromotion. Finite-element (FE) modelling has been utilised to assess micromotion of arthroplasty implants, but not TAR. Additionally, the biomechanical consequences of TAR malpositioning during surgery – previously linked with higher failure rates – remain unexplored. The aim of this thesis was theref

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15

Woodburn, James. "Kinematics at the ankle joint complex in rheumatoid arthritis." Thesis, University of Leeds, 2000. http://etheses.whiterose.ac.uk/753/.

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This thesis investigates the three-dimensional kinematics at the ankle joint complex in rheumatoid arthritis. Previous studies have identified the rearfoot as a common site for inflammatory activity in rheumatoid arthritis resulting in painful and disabling deformity for which there are no proven interventions. A generic electromagnetic tracking system was developed to undertake three-dimensional kinematics at the ankle joint complex in the bare and shod foot during gait. A joint simulator was designed, manufactured and commissioned in house to test the accuracy of the system. The results indi

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16

Marquardt, Mary Johanna. "Functional morphology of the anthropoid talocrural joint." Diss., Columbia, Mo. : University of Missouri-Columbia, 2008. http://hdl.handle.net/10355/5718.

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Thesis (M.A.)--University of Missouri-Columbia, 2008.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on August 13, 2009) Includes bibliographical references.

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17

Hamilton, Stephanie E. "The influence of passive ankle joint power on balance recovery." Thesis, Michigan Technological University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3724620.

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<p> Over one–third of Americans over the age of 65 fall each year, costing more than $19 billion in health care costs in 2000. Many adults 65+ who have not experienced a fall still fear falling, and fear can decrease quality of life and increase the likelihood of falls. Several factors such as muscle strength, power, stiffness and tendon properties change in the human body with age affecting balance, which has been tagged as a fall risk predictor. Additionally, balance recovery strategies also differ between young and older adults, with young adults primarily utilizing their ankle joint

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18

Ganguly, Amartya. "Modelling of the human quiet stance with ankle joint complexity." Thesis, University of Hull, 2014. http://hydra.hull.ac.uk/resources/hull:11634.

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This study derives an inverted pendulum model for quiet stance in humans around the ankle joints with 4×9-element mass-spring-damper (MSD) units as the musculoskeletal connections between the shank and foot bilaterally. The model focuses on the role played by both the stiffness and the damping parameters of muscles, tendons and ligaments about the ankle complex. This model partitions muscles, tendons and ligaments functionally. This novel model is used to study the behaviour of individual components in relation to quiet standing. The Lagrange d’ Alembert principle has been used to derive the e

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19

Huston, Jeffery L. "The effects of fatigue on joint position sense in the ankle." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=2880.

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Thesis (M.S.)--West Virginia University, 2003.<br>Title from document title page. Document formatted into pages; contains vi, 55 p. : ill. (some col.). Includes abstract. Includes bibliographical references.

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20

Lee, Sabrina Sien Man Piazza Stephen J. "Musculoskeletal architecture and plantarflexor muscle function in the human ankle joint." [University Park, Pa.] : Pennsylvania State University, 2009. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-4653/index.html.

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21

Voegtle, Tracy. "The effect of an acute ankle joint injury on neuromuscular function." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ58098.pdf.

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22

Morier, Rita. "Dynamic joint mechanics as an objective clinical measure of ankle function." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61268.

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The purpose of the work contained in this thesis was to investigate whether experimental paradigms based on the system identification approach are an effective clinical assessment tool. This was accomplished by conducting two companion studies: a reliability study on a group of fifteen control subjects and a case study of an individual who had sustained a unilateral undisplaced ankle fracture. The data collected in both studies included ankle angular position, torque, and Tibialis Anterior and Triceps Surae electromyograms. From these data, measures of both static (e.g. range of motion) and dy

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23

Monk, Christopher John. "An investigation of factors affecting proprioception at the ankle joint complex." Thesis, University of Southampton, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.418616.

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24

Hoch, Matthew C. "THE EFFECT OF JOINT MOBILIZATION ON FUNCTIONAL OUTCOMES ASSOCIATED WITH CHRONIC ANKLE INSTABILITY." UKnowledge, 2011. http://uknowledge.uky.edu/gradschool_diss/166.

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Ankle sprains are among the most common injuries sustained by physically active individuals. Although ankle sprains are often considered innocuous in nature, a large percentage of individuals experience repetitive sprains, residual symptoms, and recurrent ankle instability following a single acute sprain; otherwise known as chronic ankle instability (CAI). In addition to repetitive ankle trauma, those with CAI experience reductions in functional capacity over the life span. This indicates that current intervention strategies for CAI are inadequate and require further investigation. The objecti

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25

Trent, Vanessa. "An investigation into the effect of stretching frequency on range of motion at the ankle joint thesis submission to Auckland University of Technology in partial fulfilment of the degree of Master in Health Science, September 2002." Full thesis. Abstract, 2002. http://puka2.aut.ac.nz/ait/theses/TrentV.pdf.

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26

Parameswaran, Luckshman. "The effects of passive joint movement on human ankle stretch reflex dynamics." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ29621.pdf.

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27

Parameswaran, Luckshman. "The effects of passive joint movement on human ankle stretch reflex dynamics /." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27248.

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The role of the monosynaptic stretch reflex in the realm of human motor activity has been controversial for many years. A non-linear parallel-cascade system identification technique was recently developed to non-invasively elucidate the ankle reflex dynamics. Identification of these dynamics requires the application of stochastic signals to the ankle joint. The stretch reflex is known to be highly modulated and attenuated during on-going cyclical movements and passively applied perturbations. The aim of this study was to investigate these effects.<br>The stretch reflex gain was found to decrea

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28

Kuska, Elijah. "Ankle and Midtarsal Joint Kinematics During Rearfoot and Non-rearfoot Strike Walking." University of Dayton / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1564222776215818.

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29

Jalo, Hoor. "Individualized Contractile Ankle Joint Muscular Properties in Healthy and Post-Stroke Subjects." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-254376.

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This study investigated the contractile properties of the plantar-and dorsi-flexor muscles controlling the ankle joint. The purpose of this study was to investigate how the muscle strength and muscle architecture change after stroke, and how the muscle strength and architecture are correlated. 13 typically developed (TD) subjects and 8 post-stroke (PS) individuals participated in this study where they performed maximal isometric tests (MVC) at 4 angles and isokinetic tests at 2 velocities. Torque-angle and torque-angular velocity relations were created to examine the muscle group strength. Thi

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30

Palmer, Jasmin Elena. "Design and development of mechanical metatarsophalangeal joint for powered ankle-foot prostheses." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/123272.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2019<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (page 46).<br>This thesis seeks to explore passive designs for a mechanical alternative to the metatarsophalangeal (MTP) joint, a critical anatomical component in human feet which allows for various types of anatomical motion. Our goal is to design a system that will act as a platform to test a proof of concept for a passive ankle-foot prosthesis with an MTP joint, but can also be adapted to use an actuated joint in the

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31

Zamanian, Hashem. "Toward Creating Normal Ankle Joint Behavior for Drop Foot Patients Using an Ankle Foot Orthosis (AFO) with Superplastic NiTi Springs." University of Toledo / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1501856335099577.

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32

Singh, Navrag B. "Evaluation of Circumferential Ankle Pressure as an Ergonomic Intervention to Maintain Balance Perturbed by Localized Muscular Fatigue of the Ankle Joint." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/35686.

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Application of pressure in the form of taping and bracing has been shown to improve proprioception, and inducing localized muscle fatigue at various musculatures has been shown to adversely affect postural control. However, the potential for pressure application to mitigate the effects of localized muscle fatigue on postural control has not yet been determined. This study investigated specifically the effects of circumferential ankle pressure (CAP) and induced ankle fatigue on postural control. Fourteen young participants (seven males and seven females) performed fatiguing sub-maximal isoto

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33

Barrett, Christopher. "The effect of proprioceptive neuromuscular facilitation with warm-up on ankle joint dynamics." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0022/MQ50590.pdf.

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34

Barrett, Christopher 1970. "The effect of proprioceptive neuromuscular facilitation with warm-up on ankle joint dynamics /." Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20900.

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System identification techniques were used to obtain a parametric description of the mechanical stiffness of the ankle, which was then used to assess the effect of four weeks of stretching the ankle flexors and extensors. The ankle musculo-articular system was described in terms of elastic stiffness, viscosity and inertia. This description of the mechanical behaviour of the ankle joint provided an objective basis for evaluating the effects of a long-term stretching program that utilized proprioceptive neuromuscular facilitation (PNF). PNF, preceded by a warm-up, was performed daily on the sole

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35

Jenkyn, Thomas Richard. "Biomechanics of the ankle joint complex using a muscle model assisted optimisation model." Thesis, University of Strathclyde, 2001. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21444.

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A seven segment model of the right leg and foot was developed with segments: thigh, lower leg, talus, hindfoot, midfoot and lateral and medial forefoot. Three-dimensional mapping of internal structures was made from CT scans and anatomical photographs (Visible Human Project). Twelve healthy subjects performed level walking and medial walking turns at slow, preferred and fast speed. Equilibrium about the two joints of the ankle complex (ankle and subtalar), was solved using Muscle Model Assisted Optimisation (MMAO). A three component, Hill-type muscle model determined tensions in eight muscles

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36

Gladish, Jonathan Randolph. "Recovery of Balance and Lower Extremity Joint Contributions in Total Ankle Arthroplasty Patients." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78029.

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Ankle arthritis is a debilitating condition that causes severe pain and decreased function in the affected limb on the order of end-stage hip arthrosis, end-stage kidney disease, and congestive heart failure. Total ankle replacement is a viable surgical option for treating end-stage ankle arthritis, but few have studied its effects on balance over time. Therefore, the purpose of this study was to test the accuracy of a single-marker method of tracking center of mass, evaluate center of pressure measurements in total ankle replacement patients, and analyze lower extremity joint contributions ov

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37

Coglianese, Mark J. "Effects of Vibration on Vertical and Joint Stiffness in Ankle Instability and Healthy Subjects." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3591.

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Some have suggested acute increases in musculotendinous stiffness (k) following whole body vibration (WBV). Others propose that chronic ankle instability (CAI) may alter k of the lower extremity. Changes in proprioceptive activity and/or gamma motoneuron activation post-WBV and/or due to CAI could lead to alterations in k. However, little is known about acute effects of WBV on k and less is known about changes in k with CAI. PURPOSE: Assess differences in vertical and joint k between healthy and CAI subjects during single-limb landings and detect alterations in k measures post-vibration. METHO

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38

Zimmerman, Allison M. "Comparative Digital Examination of the Talocrural (ankle) Joint Provides Insight into Human bipedal locomotion." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1365158588.

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39

Mohd, Radzi Shairah Binte. "Development of a method to assess the quality of ankle joint reduction in 3D." Thesis, Queensland University of Technology, 2015. https://eprints.qut.edu.au/87380/1/Shairah%20Binte_Mohd%20Radzi_Thesis.pdf.

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This project developed a quantitative method for determining the quality of the surgical alignment of the bone fragments after an ankle fracture. The research examined the feasibility of utilising MRI-based bone models versus the gold standard CT-based bone models in order to reduce the amount of ionising radiation the patient is exposed to. In doing so, the thesis reports that there is potential for MRI to be used instead of CT depending on the scanning parameters used to obtain the medical images, the distance of the implant relative to the joint surface, and the implant material.

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40

Coleman, Scott. "Functional analysis of the articulating figure skate." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 0.38 Mb., 40 p, 2006. http://proquest.umi.com/pqdlink?did=1037890041&Fmt=7&clientId=79356&RQT=309&VName=PQD.

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41

Kozakiewicz, Andrzej. "Impedance control of an electrohydraulic actuator interacting with a human ankle joint, a new experimental setup for studying ankle dynamic stiffness during voluntary movements." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0029/MQ64231.pdf.

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42

Kozakiewicz, Andrzej 1973. "Impedance control of an electrohydraulic actuator interacting with a human ankle joint : a new experimental setup for studying ankle dynamic stiffness during voluntary movements." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=30255.

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A position-based impedance controller was designed and implemented to regulate the interaction between forces produced at the ankle joint and the position of an electrohydraulic actuator. The goal was to provide a test environment suitable for studying ankle dynamic stiffness during voluntary movements. The new experimental setup allows: (1) subjects to perform voluntary movements, where both the length of the muscles associated with the ankle joint and their activation level change, (2) the simultaneous application of position perturbation to the joint (maximum bandwidth of 50 Hz), (3) evokin

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43

Wells, Ashley M. "Effects of Joint Mobilization on Ankle Dorsiflexion Range of Motion, Dynamic Postural Control and Self-Reported Patient Outcomes in Individuals with Chronic Ankle Instability." University of Toledo / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1333373756.

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44

Turley, Kevin. "Ankle Morphology: Interface of Genetics, Ontogeny and Use." Thesis, University of Oregon, 2013. http://hdl.handle.net/1794/13266.

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A central concept in Evolutionary theory is the character trait. It provides a context in which to explore differences and similarities among taxa, both extant and extinct. It is expanded in scope in Evolutionary Developmental theory to functional units with a biological role, "evolutionarily stable configurations." The talo-crural joint is such a configuration, a highly canalized structural unit in primates forming the interface between organism, and foot and substrate. It is a microcosm in which to examine the relationship of shape with environment and function and the interplay of genetics,

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45

Skoss, Ann Rachel Locke. "Stabilisation of the human ankle joint in varying degrees of freedom : investigation of neuromuscular mechanisms." University of Western Australia. School of Human Movement and Exercise Science, 2002. http://theses.library.uwa.edu.au/adt-WU2003.0021.

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Previous research investigating the stability of the ankle joint complex may be categorised into two methodological groups, employing either an actuator to perturb the limb, or a form of standing balance disturbance such as a tilting platform, both of which test the joint in single degree of freedom (DOF). The aim of this thesis was to investigate how we control foot position and stabilise the joint when there is potential for movement in three DOF. A secondary aim of the thesis was to model the intrinsic mechanical properties of the ankle joint complex in three dimensions when coupled movemen

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46

Forster, Shauna. "A bilateral electro-hydraulic actuator system to measure dynamic ankle joint stiffness during human stance /." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80012.

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The role of the stretch reflex during upright stance remains unclear despite research that has been conducted to date. We have developed a bilateral electro-hydraulic actuator system to measure the dynamic joint stiffness of the human ankle during standing and help understand the role of the stretch reflex in the control of posture. The apparatus consists of two foot pedals that are each connected to an electro-hydraulic rotary actuator. Transducers were incorporated to measure the position and torque of each actuator, the angle of the ankle with respect to the foot plate, and the positions of

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47

Wan, Lu Ph D. Massachusetts Institute of Technology. "In-vivo cartilage contact biomechanics : an experimental and computational investigation of human ankle joint complex." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45439.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2008.<br>Includes bibliographical references (p. 236-259).<br>Osteoarthritis is affecting over 20 million people in the United States, the etiology of which is still unclear. As abnormal stress is believed to be one of the factors causing the degeneration of cartilage, the combined dual-orthogonal fluoroscopic and magnetic resonance imaging technique was applied to investigate the in-vivo biomechanics of human ankle joint complex in this work. The in-vivo kinematic data showed that the talocrural joint contributes more i

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48

Aresu, Federica. "Comparison of high density and bipolar surface EMG for ankle joint kinetics using machine learning." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-294473.

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The relationship between sEMG signals and muscle force, and associated joint torque, is an object of study for clinical applications such as rehabilitation robotics and commercial applications as wearable motion control devices. The information type and quality obtained by sEMG can impact the classification and prediction accuracy of ankle joint torque. In this thesis project, HD-sEMG based data was collected together with ankle joint torque measurements from 5 subjects during MVIC of plantarflexors and dorsiflexors. Machine learning approaches ideally suited for nonlinear regression tasks, su

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49

Conconi, Michele <1979&gt. "An New Energetic Approach to the Modeling of Human Joint Kinematics: Application to the Ankle." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/2765/1/Concon_Michele_tesi.pdf.

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Abstract:

The objective of this dissertation is to develop and test a predictive model for the passive kinematics of human joints based on the energy minimization principle. To pursue this goal, the tibio-talar joint is chosen as a reference joint, for the reduced number of bones involved and its simplicity, if compared with other sinovial joints such as the knee or the wrist. Starting from the knowledge of the articular surface shapes, the spatial trajectory of passive motion is obtained as the envelop of joint configurations that maximize the surfaces congruence. An increase in joint congruence

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50

Conconi, Michele <1979&gt. "An New Energetic Approach to the Modeling of Human Joint Kinematics: Application to the Ankle." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/2765/.

Full text

Abstract:

The objective of this dissertation is to develop and test a predictive model for the passive kinematics of human joints based on the energy minimization principle. To pursue this goal, the tibio-talar joint is chosen as a reference joint, for the reduced number of bones involved and its simplicity, if compared with other sinovial joints such as the knee or the wrist. Starting from the knowledge of the articular surface shapes, the spatial trajectory of passive motion is obtained as the envelop of joint configurations that maximize the surfaces congruence. An increase in joint congruence

APA, Harvard, Vancouver, ISO, and other styles

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