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Showing 1 to 20 of 21 for “"Musculoskeletal modeling"”.
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Musculoskeletal Modeling of The Human Elbow Joint
Comprehensive knowledge of the in vivo loading of elbow structures is essential in understanding the biomechanical causes associated with elbow diseases and injuries, and to find appropriate treatment. Currently, in vivo measurements of ligament, and muscle forces, and cartilage contact pressures …
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Patient-Specific Musculoskeletal Modeling of Total Shoulder Arthroplasty
… in cadaveric studies, and computational musculoskeletal models have been developed in OpenSim [2] to analyze muscle function and joint loading of the shoulder [3], [4],[5],[6], [7]. Little work has been done to quantify muscle forces and joint reaction loads in healthy and implanted …
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Musculoskeletal modeling and finite element analysis of the proximal juvenile femur
… years old.In this work through gait analysis and musculoskeletal modelling the loads which the femur experiences at specific stages/ages of bipedal locomotion are analysed. Finite element analyses were then performed to develop an understanding of the stresses and strains of the proximal juvenile …
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Multiscale Musculoskeletal Modeling of the Lower Limb to Perform Personalized Simulations of Movement
<p>Computational modeling has been used for many decades to inform design and decision-making in several fields of engineering, such as aerospace, automotive, petroleum, and others. However, it still struggles to have a similar impact in fields of medicine, such as orthopaedics. Three of the …
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Enhanced dynamic load sensor for the International Space Station : design, development, musculoskeletal modeling and experimental evaluation
Prolonged exposure of a vertebrate musculoskeletal system to the microgravity environment of space leads to a reduction in bone mineral density, muscle mass, strength and endurance. Such deconditioning may impede critical astronaut activities and presents an increased injury risk during flight and …
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Musculoskeletal Modeling of Back-Support Exoskeletons: Comparative Evaluation of Spine Loads, Muscle Activity, and Optimization Strategies
Work-related musculoskeletal disorders, particularly work-related low back pain, account for a substantial proportion of lost workdays in the United States, with manual lifting identified as a primary occupational risk factor. Back-support exoskeletons (BSEs) have emerged as a promising ergonomic …
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Probabilistic Musculoskeletal Simulation Methods to Address Intersegmental Dependencies of the Knee, Hip, and Spine
… of the knee, hip, and spine with probabilistic musculoskeletal modeling. These objectives were achieved by developing a probabilistic plugin for use in OpenSim and performing investigations of the regional interdependence of the knee, hip, and spine involving patients with total joint …
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Interactive tools for biomechanical modeling and realistic animation
We describe a semi-automatic technique for modeling and animating complex musculoskeletal systems using a strand based muscle model. Using our interactive tools, we are able to generate the motion of tendons and muscles under the skin of a traditionally animated character. This is achieved by …
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IMPLICATIONS OF AGING AND DEGENERATIVE ROTATOR CUFF TEARS FOR UPPER LIMB MUSCLE MORPHOLOGY, STRENGTH, AND FUNCTION
… Traditional motion capture combined with a musculoskeletal modeling approach were used to evaluate shoulder strength requirements necessary for successful task completion and determine how age- and rotator cuff tear-related strength losses affect reserve strength at the shoulder. It was …
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Evaluating Model-Estimated Shoulder Muscle Activity During Overhead Work with Varied Task Demands and Exoskeleton Use
… remain time-consuming and resource-intensive. Musculoskeletal modeling could simplify the process of ASE evaluation, by replacing electromyography (EMG) sensors with estimates of muscle activation. However, there is no existing evidence to determine whether model performance with ASE is …
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A comparative study of surrogate musculoskeletal models using various neural network configurations
The central idea in musculoskeletal modeling is to be able to predict body-level (e.g. muscle forces) as well as tissue-level information (tissue-level stress, strain, etc.). To develop computationally efficient techniques to analyze such models, surrogate models have been introduced which …
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Estimating Lumbar Spinal Loads During a Golf Swing Using an EMG -Assisted Optimization Model Approach
… loads at L4--L5 level during a golf swing using musculoskeletal modeling techniques. This study also examined the activation patterns of individual lower trunk muscles during a golf swing using surface electromyographic (EMG) techniques. Data were collected from five college golfers (average …
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Musculoskeletal Biomechanical Analysis of Brachial Plexus Injury and Treatment
… the shoulder. Recent advances in computational musculoskeletal modeling and simulation techniques allowed us to compare different nerve transfer surgeries solely based on the biomechanical roles of the muscles they target while controlling for concomitant clinical factors. Traditional motion …
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Biomechanical simulation of virtual physiological humans : modeling of musculoskeletal kinematic and dynamic redundancy using coordinate projection methods
The principles of musculoskeletal model and simulation have received much attention over the last decades, enabling the prediction of surgical treatments related to different motion limiting disorders. However, their application in clinical practice is still limited partly because the experimental …
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Knee Joint Forces During the Takeoff and Landing Phases of Different Types of Vertical Jumps
… each with and without the use of arms) using musculoskeletal modeling techniques and (b) to determine whether there are significant differences in knee joint loads between genders and among the eight types of jumps. Data were collected from eight males and eight females with no known …
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Prediction of knee loading in native knee and total knee arthroplasty : a forward dynamics computational study
"The goal of this dissertation is to develop a musculoskeletal model and corroborate model predictions to experimentally measured in vivo knee contact forces, in order to study the biomechanical consequences of two different total knee arthroplasty designs. The two main contributions of this …
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Development of a Computational Approach to Assess Hip Fracture and Repair: Considerations of Intersubject and Surgical Alignment Variability
… and the implant, indicating the importance of musculoskeletal modeling. These studies included novel techniques for evaluating hip fracture and repair that could be used to aid the surgical community by providing guidance on how implant alignment can promote ideal bone healing conditions.</p>
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Influence of Thigh Muscle Forces on Anterior Cruciate Ligament Forces during Single-Leg Landing from Three Different Heights
… three different heights, 15cm, 30cm, and 45cm. Musculoskeletal modeling was used to estimate muscle forces. Regression analyses predicted the ACL forces from all three heights, and the heights pooled together. The results showed that the quadriceps muscles forces were strongly positively …
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Effects of Hip Osteoarthritis on Lower Extremity Joint Contact Forces
… directly measured without instrumented implants. Musculoskeletal modeling is a tool for estimating JCF without the need for surgery. The results from these models can be very different due to different approaches used in the development of a model that was used for simulation. Therefore, the first …
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Astronaut Extravehicular Activity : safety, injury & countermeasures; &, Orbital collisions & space debris : incidence, impact & international policy
… mechanisms of injury, a study consisting of modeling, statistical and experimental analyses was performed in section I of this thesis. A cursory musculoskeletal modeling tool was developed for use in comparing various spacesuit hard upper torso designs. The modeling effort focuses on …
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