AIMC Topic: Leg

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A Model-Based Analysis of Supraspinal Mechanisms of Inter-Leg Coordination in Human Gait: Toward Model-Informed Robot-Assisted Rehabilitation.

IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Apr 26, 2021
Stroke survivors are often left suffering from gait instability due to hemiparesis. This gait dysfunction can lead to higher fall rates and an overall decrease in quality of life. Though there are many post-stroke gait rehabilitation methods in use c...
Humans Biomechanical Phenomena Quality of Life Gait Leg Stroke Rehabilitation Robotics Stroke Walking
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SSCA-Net: Simultaneous Self- and Channel-Attention Neural Network for Multiscale Structure-Preserving Vessel Segmentation.

BioMed research international Mar 30, 2021
Vessel segmentation is a fundamental, yet not well-solved problem in medical image analysis, due to the complicated geometrical and topological structures of human vessels. Unlike existing rule- and conventional learning-based techniques, which hardl...
Humans Neural Networks, Computer Algorithms Deep Learning Image Processing, Computer-Assisted Leg Databases as Topic Arteries Blood Vessels
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Fully automated 3D segmentation of MR-imaged calf muscle compartments: Neighborhood relationship enhanced fully convolutional network.

Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society Dec 10, 2020
Automated segmentation of individual calf muscle compartments from 3D magnetic resonance (MR) images is essential for developing quantitative biomarkers for muscular disease progression and its prediction. Achieving clinically acceptable results is a...
Magnetic Resonance Imaging Humans Leg Neural Networks, Computer Muscles Image Processing, Computer-Assisted
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Cleaning Up the MESS: Can Machine Learning Be Used to Predict Lower Extremity Amputation after Trauma-Associated Arterial Injury?

Journal of the American College of Surgeons Oct 3, 2020
BACKGROUND: Thirty years after the Mangled Extremity Severity Score was developed, advances in vascular, trauma, and orthopaedic surgery have rendered the sensitivity of this score obsolete. A significant number of patients receive amputation during ...
Adult Sensitivity and Specificity Male Algorithms Female Reproducibility of Results Leg Injuries Arteries Amputation, Surgical Decision Support Systems, Clinical Logistic Models Leg Humans Machine Learning
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Precision and accuracy of robot-assisted technology with simplified express femoral workflow in measuring leg length and offset in total hip arthroplasty.

The international journal of medical robotics + computer assisted surgery : MRCAS Aug 19, 2020
BACKGROUND: Semi-active robot-assisted total hip arthroplasty (THA) has two options to measure the leg length discrepancy (LLD) and combined offset (CO), the 'enhanced' femoral workflow and the so-called 'express' simplified workflow. The purpose of ...
Workflow Arthroplasty, Replacement, Hip Femur Leg Humans Robotics
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Pilot study: can machine learning analyses of movement discriminate between leg movements in sleep (LMS) with vs. without cortical arousals?

Sleep & breathing = Schlaf & Atmung May 26, 2020
PURPOSE: Clinical and animal studies indicate frequent small micro-arousals (McA) fragment sleep leading to health complications. McA in humans is defined by changes in EEG and EMG during sleep. Complex EEG recordings during the night are usually req...
Sleep Deprivation Movement Arousal Male Pilot Projects Adolescent Electroencephalography Electromyography Leg Machine Learning Humans Aged Adult
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Robot-Driven Locomotor Perturbations Reveal Synergy-Mediated, Context-Dependent Feedforward and Feedback Mechanisms of Adaptation.

Scientific reports Mar 25, 2020
Humans respond to mechanical perturbations that affect their gait by changing their motor control strategy. Previous work indicates that adaptation during gait is context dependent, and perturbations altering long-term stability are compensated for e...
Humans Female Adaptation, Physiological Robotics Gait Disorders, Neurologic Adult Gait Electromyography Feedback, Physiological Male Walking Muscle, Skeletal Reference Values Leg
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Policy gradient optimization of controllers for natural dynamic mono-pedal gait.

Bioinspiration & biomimetics Mar 25, 2020
We have previously suggested a biologically-inspired natural dynamic controller for biped locomotion, which applies torque pulses to the different joints at particular phases of an internal phase variable. The parameters of the controller, including ...
Humans Algorithms Computer Simulation Biomechanical Phenomena Robotics Equipment Design Gait Leg
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Biarticular muscles in light of template models, experiments and robotics: a review.

Journal of the Royal Society, Interface Feb 26, 2020
Leg morphology is an important outcome of evolution. A remarkable morphological leg feature is the existence of biarticular muscles that span adjacent joints. Diverse studies from different fields of research suggest a less coherent understanding of ...
Leg Muscle, Skeletal Humans Robotics Arm Biomechanical Phenomena
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Bio-inspired neuromuscular reflex based hopping controller for a segmented robotic leg.

Bioinspiration & biomimetics Feb 24, 2020
It has been shown that human-like hopping can be achieved by muscle reflex control in neuromechanical simulations. However, it is unclear if this concept is applicable and feasible for controlling a real robot. This paper presents a low-cost two-segm...
Reflex Motion Biomimetic Materials Leg Robotics Humans Feasibility Studies Computer Simulation Models, Biological
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