Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 38 for “"Joint Motion"”.
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Noninvasive Assessment of Joint Motion Over Long Durations: System Evaluation and Data Analysis Methods
… syndromes, may be better characterized when joint motions are assessed over long durations outside clinical, laboratory, or rehabilitation settings that involve standardized assessment, exercise protocols, and/or regimented movements. Assessment methods for human movement capture beyond …
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3D dynamic in vivo imaging of joint motion: application to measurement of anterior cruciate ligament function
… injuries. Improved understanding of the knee motions that increase the risk of ACL injury can inform more effective injury prevention strategies. Furthermore, there is presently limited in vivo data to describe the function of ACL under dynamic loading conditions. Understanding how the ACL …
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Joint motion studies of the normal and cranial cruciate ligament deficient stifle in large breed dogs
Joint motion was measured for the intact and cranial cruciate (CCL) deficient stifle in five large breed dogs. A combined method using an instrumented spatial linkage (ISL) and radiophotogrammetry provided a sensitive method of measuring the three dimensional motion of the stifle over time. It was …
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Effects of Lumbar Extensor Fatigue on Ankle Joint Motion Sense and Prolonged Effect on Postural Sway
Falls from heights are a major concern in the occupational setting, and are often the result of a loss of balance. Lumbar extensor fatigue (LEF) increases postural sway which has been associated with degradations in balance. Study one focuses on the effects of fatiguing time and fatigue level on …
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A Dynamic Ankle Orthosis for Alleviating Mechanical Foot and Ankle Pain, Preserving Joint Motion, and Restoring Patient Function
… limb, but they can also significantly hinder joint motion and limit function. The Dynamic Ankle Orthosis (DAO) was created with the intent to alleviate pain using an offloading mechanism without interfering with natural joint motion. This dissertation presents the development, benchtop …
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Imaging displacement and strain in the medial gastrocnemius muscle during ankle-joint motion using 2D-ciné DENSE MRI
… where single muscles act independently to affect motion. This thesis attempts to address the compounded effect that muscles have on each other, while working synergistically in a group, such as the calf muscle.
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Comparison of a Dynamic Ankle Orthosis to a Walking Boot for Preserving Ankle Joint Motion and Reducing Tibial Bone Load and Strain
… boot for 3 – 12 weeks, which limits ankle motion and causes lower limb muscle atrophy. A Dynamic Ankle Orthosis (DAO) provided a distractive force that offloaded the ankle and retained sagittal ankle excursion during walking. It remains unclear how tibial loading is affected by a walking …
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Imitating human motion using humanoid upper body models
This thesis investigates human motion imitation of five different humanoid upper bodies (comprised of the torso and upper limbs) using human dance motion as a case study. The humanoid models are based on five existing humanoids, namely, ARMAR, HRP-2, SURALP, WABIAN-2, and WE-4RII. These humanoids …
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Design and analysis of wearable conductive fiber sensors for continuous multi-axis joint angle measurements
… of continuous, long-term monitoring of human joint motion is one that finds many applications, especially in the medical and rehabilitation fields. There is currently a lack of acceptable devices available to perform such measurements in an accurate and non-intrusive way for a patient over a …
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Exploiting quaternions to support expressive interactive character motion
A real-time motion engine for interactive synthetic characters, either virtual or physical, needs to allow expressivity and interactivity of motion in order to maintain the illusion of life. Canned animation examples from an animator or motion capture device are expressive, but not very …
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Association between Overuse Injury and Biomechanics in Distance Runners
… injury frequency will be associated with greater joint motion and joint loads, a lower arch-index and Q-angle, as well as inferior lower extremity strength variables.
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Optimal joint trajectory planning for a robot with elastic links
The optimal joint angle trajectory planning of light-weight flexible manipulator is investigated based on the cycloidal motions of each joint. The objective of the optimization is the minimization of link tip vibrations during and after joint motion, and the design variables are the inflection or …
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Hardware Design of a Wearable System for Gesture-Based Teleoperation of a Robotic Manipulator
… A review of sensors currently in use for human joint angle measurement is presented. Based on this review, a method was chosen that uses a variable-length fiber optic sensor. Several different types of optical fibers, along with a variety of test configurations, were initially evaluated, and the …
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NPL : a graphical programming language for motor control and its application to bipedal walking
… walking control include playback of recorded joint motion and the derivation of dynamic equations to map desired forces at the body to the required torques at the joints. Both methods require a significant amount of up-front knowledge about the structure and characteristics of the robot. This …
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Biomechanical Validation of Skeletal Tracking Data and Developing Action Recognition Models for Basketball: A Baseline for NBA Officiating Tools
… games. The methodology includes biomechanical joint validation, anomaly detection, and region-based consistency analysis to assess the integrity of player motion data. Joint movement anomalies are used to detect tracking errors, while court region and stadium-level evaluations help identify …
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The Bio-Mechanical Development and Kinematic Evaluation of Zone I and Zone II Injuries and their Corresponding Surgical Repair Techniques using an In-Vitro Active Finger Motion Simulator: A Cadaveric Study
Research development involving large scale joint mechanics and biomechanical adaptations is growing. However, interest in smaller scale joints, such as the fingers, is limited. Thus, the present work describes the enhancement and clinical application of a previously designed in-vitro active finger …
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Design of Tribologically Enhanced Polymeric Materials for Biomedical Applications
… are in normal contact, accompanied by tangential motion, there is potential for deterioration of one or both surfaces. Gradual wear, or the removal of surface material, is typically an undesirable event. Therefore, the need for lubrication arises to minimize the amount of shear stress that …
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Generalizable Methods for Modeling Lumbar Spine Kinematics
… of biomechanical models. Kinematics describes motion of the five lumbar vertebrae without consideration for the forces that cause the motion. Despite considerable attention from researchers and clinicians, lumbar spine kinematics are not fully understood because the anatomy is not accessible …
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Symbolic automation and numerical synthesis for robot kinematics
… of the end effector for the specified values of joint parameters is analyzed. Second, the differential motions concerning the differential relationships between the command variables in position and orientation of the end effector and the joint-controlled variables are studied. Finally, the …
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