Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Biomedical Engineering and Bioengineering (9)
- Biomechanics and Biotransport (6)
- Mechanical Engineering (3)
- Biomechanical Engineering (2)
- Analytical, Diagnostic and Therapeutic Techniques and Equipment (1)
-
- Anatomy (1)
- Bioelectrical and Neuroengineering (1)
- Biomedical (1)
- Biomedical Devices and Instrumentation (1)
- Computer Engineering (1)
- Electrical and Computer Engineering (1)
- Kinesiology (1)
- Life Sciences (1)
- Medicine and Health Sciences (1)
- Musculoskeletal System (1)
- Robotics (1)
- Social and Behavioral Sciences (1)
- Sports Sciences (1)
- Sports Studies (1)
- Therapeutics (1)
- Tissues (1)
- Institution
Articles 1 - 12 of 12
Full-Text Articles in Engineering
Do Different Pathologies Affect The Relationship Between The Stiffness Of The Plantar Fascia And The Function Of The Mtp Joint?, Madeline Ryan Pauley
Do Different Pathologies Affect The Relationship Between The Stiffness Of The Plantar Fascia And The Function Of The Mtp Joint?, Madeline Ryan Pauley
Biomedical Engineering Theses & Dissertations
Compared to healthy individuals, individuals with plantar fasciitis and diabetes experience material and structural property changes to soft tissues in the feet. The purpose of this study was to compare the relationship between material properties, power absorption, and energy storage characteristics to metatarsal power between healthy, plantar fasciitis symptomatic and asymptomatic, and diabetic participants. Investigating material change differences as well as energy storage and transfer trends in different pathology groups can lead to a better overall understanding of power transfer at the metatarsophalangeal joint (MTP). Participants were recruited for kinematic gait analysis and lower extremity shear wave elastography analysis and …
Prosthetic Foot/Ankle Inversion & Eversion Enhancement, Jason Wiebrecht, Maddison Grimes
Prosthetic Foot/Ankle Inversion & Eversion Enhancement, Jason Wiebrecht, Maddison Grimes
Williams Honors College, Honors Research Projects
Modify a prosthetic foot/ankle, that currently has power at the ankle joint, for dorsiflexion/flexion so that it supplies power across a simulated subtalar joint, making the joint capable of inversion/eversion.
Estimation Of Multi-Directional Ankle Impedance As A Function Of Lower Extremity Muscle Activation, Lauren Knop
Estimation Of Multi-Directional Ankle Impedance As A Function Of Lower Extremity Muscle Activation, Lauren Knop
Dissertations, Master's Theses and Master's Reports
The purpose of this research is to investigate the relationship between the mechanical impedance of the human ankle and the corresponding lower extremity muscle activity. Three experimental studies were performed to measure the ankle impedance about multiple degrees of freedom (DOF), while the ankle was subjected to different loading conditions and different levels of muscle activity. The first study determined the non-loaded ankle impedance in the sagittal, frontal, and transverse anatomical planes while the ankle was suspended above the ground. The subjects actively co-contracted their agonist and antagonistic muscles to various levels, measured using electromyography (EMG). An Artificial Neural Network …
Effects Of Stride Length On Lower Limb Stiffness When Running With Body Borne Load, Nick Lobb
Effects Of Stride Length On Lower Limb Stiffness When Running With Body Borne Load, Nick Lobb
Boise State University Theses and Dissertations
Introduction: During military activities, soldiers are often required to run at a fixed cadence with body borne load, but these loads purportedly increase leg stiffness, leading to increased risk of musculoskeletal injury. Yet, to date, it is unknown how altering stride length when running with body borne load affects lower limb stiffness for males and females. Purpose: To quantify leg stiffness, and lower limb joint (hip, knee and ankle) stiffness for males and females using different stride lengths to run with body borne loads of 20 kg, 25 kg, 30 kg, and 35 kg. Methods: Twenty-seven (17 males and 10 …
Self-Powered Ankle Prosthetic, Corina M. Espelien, Kelsey Pietzsch, Anna Sullivan
Self-Powered Ankle Prosthetic, Corina M. Espelien, Kelsey Pietzsch, Anna Sullivan
Mechanical Engineering
Originating from QL+'s customer requirements, the main technical specifications were to have 80% physiological range of motion, elastic energy return, impact absorption, and no external power sources. Based on the background research conducted and the discussions with experts in the field, the project team decided to focus on designing a prosthetic that focused on plantarflexion and dorsiflexion for a more comfortable gait. The main components of the final design are a hydraulic shock absorber, cam, torsion springs, heel, stopper, and separated keel. The heel, front and back keels, and stopper were manufactured out of carbon fiber. The link, lever, attachment …
Computational Simulations Of Biomechanical Kinematics In Wsu Total Ankle Replacement Systems, Dinesh Gundapaneni
Computational Simulations Of Biomechanical Kinematics In Wsu Total Ankle Replacement Systems, Dinesh Gundapaneni
Browse all Theses and Dissertations
Ankle arthritis constitutes about 10% of all joint arthritis cases, however, the revision rate of ankle replacement devices is three times higher than comparable hip and knee devices. With complicated bone morphology and surrounding ligament structures, the physiological and gait characteristics of the ankle joint presents a challenge to biomechanicians. As a result, there is a lack of fundamental understanding how the ligaments and articular surfaces interact. The objective of this doctoral research is to address the pattern of contact at the joint articulation, the fundamental role of ligaments in joint mobility, and biomechanics of total ankle replacement (TAR) devices. …
The Effects Of Fatigue On Lower Extremity Kinetics And Kinematics In Subjects With Known Ankle Instability, Lindsay E. Clayton
The Effects Of Fatigue On Lower Extremity Kinetics And Kinematics In Subjects With Known Ankle Instability, Lindsay E. Clayton
Theses and Dissertations
The goal of this study was to evaluate biomechanical differences between healthy subjects and those with ankle instability during the gradual onset of lower extremity fatigue from a landing activity. An understanding of these differences is needed in order to prevent future injury to or further debilitation in individuals with ankle instability. A functional fatiguing activity was designed to focus fatigue on the quadriceps muscles, as those are the muscles most frequently fatigued during sport. Measures were taken throughout the progression of fatigue with a force plate and a motion tracking system and included vertical ground reaction force and lower …
Slow Potentials Of The Sensorimotor Cortex During Rhythmic Movements Of The Ankle, Ryan J. Mckindles
Slow Potentials Of The Sensorimotor Cortex During Rhythmic Movements Of The Ankle, Ryan J. Mckindles
Dissertations (1934 -)
The objective of this dissertation was to more fully understand the role of the human brain in the production of lower extremity rhythmic movements. Throughout the last century, evidence from animal models has demonstrated that spinal reflexes and networks alone are sufficient to propagate ambulation. However, observations after neural trauma, such as a spinal cord injury, demonstrate that humans require supraspinal drive to facilitate locomotion. To investigate the unique nature of lower extremity rhythmic movements, electroencephalography was used to record neural signals from the sensorimotor cortex during three cyclic ankle movement experiments. First, we characterized the differences in slow movement-related …
Evaluation Of The Anterior Talofibular And Calcaneofibular Ligament In Relation To Supination Ankle Sprains, Peter Tran
Evaluation Of The Anterior Talofibular And Calcaneofibular Ligament In Relation To Supination Ankle Sprains, Peter Tran
Biomedical Engineering
Ankle injuries have always posed an issue to a number of athletes. Sports that involve running and jumping accumulate about 25% of injuries correlating to ankle sprains. In most ankle sprains the inversion (supination) of the ankle cause damage to lateral ligaments. The two most common lateral ligaments to experience damage are the anterior talofibular (ATFL) and calcaneofibular (CFL) ligaments. The methods of taping and ankle braces have allowed athletes to prevent recurring sprains from occurring. However, sprains can still occur even when one or both methods are applied. The purpose of each method is to restrict the range of …
Finite Element Analysis Of Transverse Medial Malleolar Fracture Fixation, Ruchi Chande
Finite Element Analysis Of Transverse Medial Malleolar Fracture Fixation, Ruchi Chande
Theses and Dissertations
Injury to the medial malleolus, the distal end of the tibia and one of the bones comprising the ankle joint, can occur in various loading scenarios. Open reduction/internal fixation (ORIF) to reattach the malleolar fragment to the proximal tibia can be achieved via various devices, however small fragments are particularly challenging to treat. In this study, computational finite element analysis (FEA) was utilized to investigate the fixation of transverse medial malleolar fractures by two cancellous screws or by a new fixation device, the Medial Malleolar Sled™. Cadaveric testing assessed the performance of the two constructs in both tension and torsion. …
Development Of A Muscle Force Optimization Algorithm To Improve Center Of Pressure During Simulated Walking, Lawrence Dean Noble
Development Of A Muscle Force Optimization Algorithm To Improve Center Of Pressure During Simulated Walking, Lawrence Dean Noble
ETD Archive
The Universal Musculoskeletal Simulator (UMS) was developed at the Cleveland Clinic to facilitate general purpose orthopaedic research that allows investigators to study the in vitro forces applied to bones, tendons and ligaments during simulated exercise of cadaver joint systems. In its original state, the UMS hardware consisted of a rotopod (a specialized hexapod robot), a single rotary tendon actuator and custom LabVIEW software for coordinated control and operation of the system. The focus of this work was to 1) enhance the UMS with a multi-tendon actuator system, 2) develop a muscle force optimization algorithm and evaluate it with a static …
Preliminary Design Approach For Prosthetic Ankle Joints Using Compliant Mechanisms, Jason Matthew Wiersdorf
Preliminary Design Approach For Prosthetic Ankle Joints Using Compliant Mechanisms, Jason Matthew Wiersdorf
Theses and Dissertations
The objective of this thesis is to develop design approaches and models for prosthetic ankle joints using kinematic models of the human ankle and compliant mechanisms technology. Compliant mechanisms offer several potential design advantages over traditional rigid-body designs including high reliability and low cost. These design advantages are ideal for use in prosthetics. Some prosthetic ankle/foot systems currently on the market have multiple degrees of freedom yet are expensive. Additionally, even though these systems have multiple degrees of freedom, none of them are designed after the actual movements of the biological ankle. In this thesis a two, single degree-of-freedom hinge …