IEEE Transactions on Biomedical Engineering

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The impact of ACL laxity on a bicondylar robotic knee and implications in human joint biomechanics
A robot model of the human knee provides a new way to investigate joint biomechanics. The specially designed joint has geometry copied from human bones scans and uses springs for ligaments. A knee cap (patella) and tendons transmit forces from an antagonistic pair of actuators, like in the human leg. This method overcomes many of the experimental limitations from using human tissue. The robot demonstrates the unique way in which the sliding of the joint surfaces allows the human knee mechanism to compensate when critical structures such as the anterior cruciate ligaments (ACL) are removed... Read more
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A Mechatronic System for Studying Energy Optimization During Walking
    A general principle of human movement is that our nervous system is able to learn optimal coordination strategies. However, how our nervous system performs this optimization is not well understood. Here we design, build, and test a mechatronic system to... Read more
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A New Modeling Method to Characterize the Stance Control Function of Prosthetic Knee Joints
Biomechanical models can inform design and optimization of prosthetic devices by connecting empirically-derived biomechanical data to device design parameters. A new method is presented to characterize the function of prosthetic stance control under mobility conditions associated with activities of daily... Read more
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Predicting Athlete Ground Reaction Forces and Moments From Spatio-temporal Driven CNN Models
Conventional methods to generate ground reaction forces and moments (GRF/M) required for traditional inverse dynamics estimation of athlete joint forces and loads are confined to biomechanics laboratories far removed from the sporting field of play. This has been an ongoing... Read more
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Design and Test of a Biomechanical Model for the Estimation of Knee Joint Angle During Indoor Rowing: Implications for FES-Rowing Protocols in Paraplegia
Functional electrical stimulation of lower limb muscles during rowing provides a means for the cardiovascular conditioning in paraplegia. The possibility of shaping stimulation profiles according to changes in knee angle, so far conceived as changes in seat position, may help... Read more
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Biomechanical and Physiological Evaluation of Multi-Joint Assistance With Soft Exosuits
To understand the effects of soft exosuits on human loaded walking, we developed a reconfigurable multi-joint actuation platform that can provide synchronized forces to the ankle and hip joints. Two different assistive strategies were evaluated on eight subjects walking on... Read more
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Full Body Musculoskeletal Model for Muscle-Driven Simulation of Human Gait
Rajagopal, Christopher L. Dembia, Matthew S. DeMers, Denny D. Delp, Jennifer L. Hicks, and Scott L. Delp, Stanford University Human movement involves complex interactions between the neuromuscular and skeletal systems, many components of which cannot be easily measured in a laboratory setting.... Read more
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Novel Methods for Sensing Acoustical Emissions from the Knee for Wearable Joint Health Assessment
Caitlin N. Teague, Sinan Hersek, Hakan Töreyin, Mindy L. Millard-Stafford, Michael L. Jones, Geza F. Kogler, Michael N. Sawka, and Omer T. Inan, Georgia Institute of Technology, USA The research reported in this paper was highlighted in several major news pieces including Scientific American and BBC Radio. We... Read more
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Simulation-Based Design for Wearable Robotic Systems: An Optimization Framework for Enhancing a Standing Long Jump
Wearable robotic devices offer great potential to improve human performance for various movement tasks, but the success of these devices has been limited by our insufficient understanding of the complex interactions between the human and assistive device. With computer simulation... Read more
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An Open-Source Toolbox for Surrogate Modeling of Joint Contact Mechanics
Ilan Eskinazi and Benjamin J. Fregly, University of Florida, USA, Volume 63, Issue 2, Page: 269-277 Incorporation of elastic joint contact models into simulations of human movement could facilitate studying the interactions between muscles, ligaments, and bones. Unfortunately, elastic joint contact models... Read more