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 12 of 12 for “"Transtibial amputation"”.
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Segmental Movement Compensations in Patients with Transtibial Amputation Identified Using Angular Momentum Separation
<p>Patients with unilateral dysvascular transtibial amputation (TTA) adopt movement compensations that are required to maintain balance and achieve ambulation in the absence of ankle plantar flexion, and result in increased and asymmetric joint loading patterns. As a result, this population is at …
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Resting State Neurophysiology of Agonist-Antagonist Myoneural Interface in Persons with Transtibial Amputation
… myoneural interface (AMI) is a novel amputation surgery that preserves sensorimotor signaling mechanisms of the central-peripheral nervous systems. Our first neuroimaging study investigating AMI subjects (Srinivasan et al., Sci. Transl. Med. 2020) focused on task-based neural …
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Effect of prosthetic alignment on muscle activity for people with a unilateral transtibial amputation during sit-to-stand, The
People with a lower limb amputation have altered motion strategies during daily tasks compared to people without an amputation. These altered motion strategies can result in the development of secondary conditions, such as residual limb or low back pain, but the underlying muscle activity that …
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Neurally-controlled ankle-foot prosthesis with non-backdrivable transmission for rock climbing augmentation
… to enhance rock climbing ability in persons with transtibial amputation. The bionic rock climbing prosthesis restores biologic performance of the ankle-foot complex. The user volitionally controls the positions of both the prosthetic ankle and subtalar joints via input from electromyography …
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Design and Evaluation of a Quasi-Passive Variable Stiffness Ankle-Foot Prosthesis to Improve Biomechanics Across Walking Speeds
… related dysvascular conditions [1]. Lower limb amputation often leads to secondary conditions such as knee pain, knee osteoarthritis, osteopenia, back pain, postural changes, and general deconditioning [2]. For people with transtibial (below-knee) amputation, prevalence of knee osteoarthritis in …
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Human Knee FEA Model for Transtibial Amputee Tibial Cartilage Pressure in Gait and Cycling
… higher for persons who have suffered a transtibial amputation. Abnormal cartilage stress can cause higher OA risk, however it is unknown if there is a connection between exercise type and cartilage stress. To help answer this, a tibiofemoral FEA model was created. Utilizing linear …
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Development and validation of a novel framework for designing and optimizing passive prosthetic feet using lower leg trajectory
… manufacturable prosthetic foot for persons with amputations living in the developing world. Despite a vast body of literature on prosthetic foot design, there is a dearth of knowledge regarding how the mechanical characteristics of passive prosthetic feet affect their biomechanical performance. …
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Development and evaluation of biarticular transtibial prostheses for level-ground amputee walking
… strides have been made toward the development of transtibial prostheses that match the functionality of their corresponding biological structures. However, these devices are fundamentally limited because they only emulate the biological ankle-foot complex. In contrast, the gastrocnemius calf …
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Multiscale modeling of the lumbar spine to investigate tissue-level load transfer during activities of daily living
… model was applied to people with and without a transtibial amputation (TTA) to assess differences in tissue load distribution during daily activities between groups. Lumbar spine tissue loads were also analyzed for a participant with a TTA and LBP who underwent movement retraining rehabilitation …
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Prosthetic socket design : from a multi-indenter device for in vivo biomechanical tissue measurement to a quasi-passive transtibial socket interface
… be made reproducibly, and persons with limb amputation too often experience discomfort. As a resolution to this difficulty, the field of digital prosthetic socket design seeks to advance a quantitative CAD/CAM methodology for socket production to produce reproducible and comfortable …
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Design and Evaluation of a Powered Series-Elastic Cycloidal Ankle (CyAn) Prosthesis
… solutions [1]. Individuals with lower limb amputations often face increased energy expenditure and secondary musculoskeletal conditions as a result of using conventional prosthetic devices [2]. These challenges underscore the necessity for innovative prosthetic designs that can enhance user …