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 80 for “"amputee"”.
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Functional assessment of amputee performance
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1992.
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Pattern classification of terrain during amputee walking
… walking over 19 terrain transitions and 7 non-amputees walking over 9 transitions, forming the largest collection of transitions to date using an exhaustive set of sensors: inertial measurement units, gyroscopes, kinematics from motion capture, and electromyography from 16 sites on the lower …
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Biomechanical characteristics of the lower extremities of amputee versus normal subjects
… non-amputated leg of unilateral lower extremity amputees significantly differed from the dominant leg of normal subjects. A comparison was made of the mean peak isokinetic knee extensor and ankle plantar flexor torques and mean performance in one-legged static and counter movement vertical jumps.
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Powered ankle-foot prosthesis for the improvement of amputee walking economy
… work. Clinical studies indicate that transtibial amputees using conventional prostheses exhibit higher gait metabolic rates as compared to intact individuals. Researchers believe the main cause for the observed increase in metabolism is due to the inability of conventional prostheses to provide …
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A telemetry system for above knee (A/K) amputee gait training
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1985.
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Development and evaluation of biarticular transtibial prostheses for level-ground amputee walking
… of an artificial gastrocnemius for transtibial amputee gait. However, further study is warranted to determine the requirements for achieving a consistent metabolic improvement.
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Human Knee FEA Model for Transtibial Amputee Tibial Cartilage Pressure in Gait and Cycling
… data. In a previous study, 6 control and 6 amputee subjects underwent gait and cycling experiments. The resultant knee loads were analyzed to find the maximum compressive load and the respective shear forces and rotation moments for each trial, which were then applied to the model. Maximum …
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A vibrotactile display design for the feedback of external prosthesis sensory information to the amputee wearer
… the effectiveness of the system, lower-limb amputees were asked to learn the three haptic mappings and use the feedback system to control a virtual ankle to a desired ankle position using a physical knob interface. Results show an overall recognition rate of 85% for all three haptic mappings …
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An investigation into the relationship between knee axis alignment and swing phase whip during trans-femoral amputee gait
… of the common gait deviations thattrans-femoral amputees exhibit during walking. It poses several negative gaitcharacteristics to trans-femoral amputees. Changing the prosthetic knee axis alignmentin the coronal and transverse plane so that it is adducted (moved downwards medially)and / or …
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An Attempt to Improve Stance Mechanics of Trans-Tibial Amputee Gait by the Design of a Modular Ankle Joint Prosthetic
… A-priori research shows that trans-tibial (TT) amputees display poor gait parameters when walking with low-cost ankle-foot prosthetics (here referred to as baseline AFP’s). This has drastic implications for the amputee populations in the developing world specifically, as they have limited access …
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Biomechanical and psychological factors that distinguish fallers from non-fallers : a comparative study of transtibial amputees and able bodied individuals
Transtibial amputees are at a higher risk of falling than age-matched able-bodied individuals. In order to make recommendations for falls prevention and treatment programmes, it is important to have a sound understanding of the underlying biomechanical function in persons at high risk of falling. …
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Study of adaptation in amputees
A large fraction of above-elbow amputees choose not to use available "high-tech" motorized prostheses in favor of simpler body-powered prostheses. The goal of this thesis is to begin the process of finding which aspects of body-powered prostheses make them more popular than motorized prostheses. It …
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Design of a Testing Fixture for the Characterization and Modeling of a Powered Prosthetic Ankle Using a Lorentz Force Actuator
… in prosthetic ankles have been improving amputee gaits, gradually approaching a more normal, non-amputee gait as designs develop. Currently, powered ankle prosthetics, or bionic ankles, hold the potential to mold the amputee gait much closer to its biological counterpart. This requires …
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The Dynamic characterisation of ESR prosthetic running feet: an investigation of the key parameters affecting their performance.
… response is limited but suggests that the amputee with running foot can be considered to act in accordance with Simple Harmonic Motion, but this does not appear to be reflected by the prescription processes currently employed by manufacturers. The research question is asked: ‘Is the current …
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From Lab to Outdoors: The Effects of Terrain, Environment, Amputation level, and Prosthetic Knee Type on Gait
… technology, a greater understanding of amputee gait is needed, especially among amputees in developing countries. Field studies as well as prosthesis technology in developing countries are limited due to barriers associated with equipment and resources availability. Furthermore, …
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The effect of transverse rotation and longitudinal translation between prosthetic components during the gait of unilateral trans-tibial amputees
During stance phase of amputee gait, considerable forces are transmitted across the residual limb socket interface. These loads and associated gait patterns can be altered by introducing compliant elements into the prosthesis. However, previous studies have failed to adequately describe the effects …
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The beauty of prostheses : designing for female amputees
… to provide optimal functionality to assist the amputee in returning back to her normal daily activities as much and as independently as is possible. However, when an amputee wears her prosthesis, the prosthesis also becomes a part of her body image and feminine identity. She requires a …
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The Design, Development, and Validation of a Residual Limb Evaluation System for the Real-Time Data Mapping of the Trans-Tibial Amputee Socket-Limb Interface for Prosthetic Fitment
… occur on the residual limb (RL) of trans-tibial amputees (TTAs). These are induced by an improper prosthetic socket fitment, alignment or component selection. It was identified that there is a lack of RL evaluation systems (RLESs) that are tailored for the prosthetic fitting procedure that …
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Reactive stepping strategies following lateral surface translations in individuals with a unilateral lower limb amputation
… stepping strategies that are used by lower limb amputees, which likely consist of unique properties because of the limitations when using a prosthesis, have not been thoroughly identified. Therefore, this study examined the lateral reactive stepping strategies used eight amputees and ten …
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Design of test bench apparatus and preliminary weight reduction strategy for an active knee prosthesis
… level ground walking trials with above knee amputee participants. Finally, an empirical weight reduction strategy for the active knee is proposed and analyzed. This strategy aims to reduce distal leg mass which contributes to the overall energetic demands of amputee walking. FEA on the …
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