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Computer-assisted contralateral side comparison of the ankle joint using flat panel technology

Sarina Thomas, Lisa Kausch, Holger Kunze, Maxim Privalov, André Klein, Jan El Barbari, Celia Martin Vicario, Jochen Franke, Klaus Maier-Hein
2021 International Journal of Computer Assisted Radiology and Surgery  
In this paper, an assistance system is proposed that provides a side-to-side view of the two ankle joints for visual comparison and instant evaluation using only one 3D C-arm image.  ...  The proposed pipeline enables a direct contralateral side comparison without additional radiation.  ...  If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly  ... 
doi:10.1007/s11548-021-02329-w pmid:33877526 fatcat:qdbhkliqxngpbm5usgbbscz4iq

Designs and performance of three new microprocessor-controlled knee joints

Julius Thiele, Christina Schöllig, Malte Bellmann, Marc Kraft
2018 Biomedical Engineering  
Hence, a detailed comparison of user demands and performance of the designated knee joint is mandatory to ensure a maximum in user outcome.  ...  Additionally, technical analyses using patents, technical documentations and X-ray computed tomography (CT) for each knee joint were performed.  ...  This is illustrated by the nearly flat slope of the regression line for the contralateral side. The slope was similar for all tested knee joints with a mean of 3.02°/m/s (R 2 = 0.02).  ... 
doi:10.1515/bmt-2017-0053 pmid:29425102 fatcat:puyebwnfwvblhkcitk3s2yenpe

Three-dimensional kinematics of the pelvis and hind limbs in chimpanzee (Pan troglodytes) and human bipedal walking

Matthew C. O'Neill, Leng-Feng Lee, Brigitte Demes, Nathan E. Thompson, Susan G. Larson, Jack T. Stern, Brian R. Umberger
2015 Journal of Human Evolution  
The stride-to-stride and intraspecific variations in 3-D kinematics were calculated using the adjusted coefficient of multiple correlation.  ...  Here, we describe the three-dimensional (3-D) kinematics of the pelvis, hip, knee and ankle during bipedal walking and compare those values to humans walking at the same dimensionless and dimensional velocities  ...  Smith for assistance with human data collection and processing. Two anonymous reviewers provided helpful comments on an earlier version of this paper.  ... 
doi:10.1016/j.jhevol.2015.05.012 pmid:26194031 fatcat:4favunlcbrhw3lwxwopk6x3a24

Machine Learning Approaches for Activity Recognition and/or Activity Prediction in Locomotion Assistive Devices—A Systematic Review

Floriant Labarrière, Elizabeth Thomas, Laurine Calistri, Virgil Optasanu, Mathieu Gueugnon, Paul Ornetti, Davy Laroche
2020 Sensors  
This review synthesizes the machine learning algorithms designed to recognize or to predict a locomotion mode in order to automatically adapt the behavior of a locomotion assistive device.  ...  The machine learning algorithms implemented in the included studies reached global mean accuracies of around 90%.  ...  Acknowledgments: Authors want to thank all staff of the university of Burgundy and University Hospital of Dijon for their help for funding and during the manuscript preparation.  ... 
doi:10.3390/s20216345 pmid:33172158 fatcat:2t3fsxccd5fnvdolrihdpbaouu

Quantification of Motor Cortex Activity and Full-Body Biomechanics During Unconstrained Locomotion

Boris I. Prilutsky, Mikhail G. Sirota, Robert J. Gregor, Irina N. Beloozerova
2005 Journal of Neurophysiology  
We conclude that comparison of motor cortex activity with full-body biomechanics may be a useful tool in further elucidating the function of the motor cortex.  ...  The method is illustrated by selected results obtained from two cats tested while walking on a flat surface.  ...  The research reported in this paper was supported by the Center for Human Movement Studies of Georgia Institute of Technology to B. I.  ... 
doi:10.1152/jn.00704.2004 pmid:15888524 fatcat:3ztocu63cfe7bdp4jbencjzua4

Identification of the contribution of the ankle and hip joints to multi-segmental balance control

Tjitske Anke Boonstra, Alfred C Schouten, Herman van der Kooij
2013 Journal of NeuroEngineering and Rehabilitation  
The balance control system dynamic behaviour of the participants was estimated by Frequency Response Functions (FRFs), which relate ankle and hip joint angles to joint torques, using a multivariate closed-loop  ...  A novel method was developed that reliably estimates the contribution of the left and right leg (i.e., the ankle and hip joints) to the balance control of individual subjects.  ...  We thank Jantsje Pasma and Denise Engelhart for their assistance with the measurements. We also want to acknowledge the constructive suggestions of the anonymous reviewers.  ... 
doi:10.1186/1743-0003-10-23 pmid:23433148 pmcid:PMC3662596 fatcat:b276vlraqnfhnisw6r3xntov4a

Twin robotic x-ray system in small bone and joint trauma: impact of cone-beam computed tomography on treatment decisions

Jan-Peter Grunz, Lenhard Pennig, Tabea Fieber, Carsten Herbert Gietzen, Julius Frederik Heidenreich, Henner Huflage, Philipp Gruschwitz, Philipp Josef Kuhl, Bernhard Petritsch, Aleksander Kosmala, Thorsten Alexander Bley, Tobias Gassenmaier
2020 European Radiology  
We assessed the clinical value of CBCT scans by analyzing the influence of additional findings on therapy.  ...  Methods Ninety-two patients underwent radiography and subsequent CBCT imaging with the twin robotic scanner (76 wrist/hand/finger and 16 ankle/foot/toe trauma scans).  ...  The flat-panel detector provides an image matrix of 1420 × 1436 pixels with 0.3 mm pixel size after 2 × 2 binning.  ... 
doi:10.1007/s00330-020-07563-5 pmid:33280057 fatcat:xvjiefblorgsvb23366fv4k4ze

Robotic locomotion combining Central Pattern Generators and reflexes

Cesar Ferreira, Cristina P. Santos
2015 2015 IEEE 4th Portuguese Meeting on Bioengineering (ENBENG)  
They build a quadruped robot named Patrush, which had three joints (hip, knee and ankle) for each one of the legs.  ...  It has four joints for each leg: a hip pitch joint, a hip yaw joint, a knee pitch joint and a passive ankle pitch joint to prevent the swinging leg from stumbling on an obstacle.  ...  Another future task is the improvement of the hybrid models through the implementation of an optimization system capable of obtaining the best values that define the relative importance of CPGs in each  ... 
doi:10.1109/enbeng.2015.7088893 fatcat:n7iaam6t7rg5hlthuak73fkrjq

Post-stroke balance rehabilitation under multi-level electrotherapy: a conceptual review

Anirban Dutta, Uttama Lahiri, Abhijit Das, Michael A. Nitsche, David Guiraud
2014 Frontiers in Neuroscience  
Here, the motor task can be assisted with neuromuscular electrical stimulation (NMES) where the BMI will act as a real-time decoder.  ...  However, the cortical control and induction of neuroplasticity in a closed-loop BMI is also dependent on the state of brain, e.g., visuospatial attention during visuomotor task performance.  ...  The technical help received from the interns-R. Sehgal, G. Aggarwal, A. Jacob, and D. Kumar-in the development of the experimental setup is gratefully acknowledged.  ... 
doi:10.3389/fnins.2014.00403 pmid:25565937 pmcid:PMC4266025 fatcat:j3sxdlzvhreknhejdqsg6wx2zu

Life in extreme environments: how will humans perform on Mars?

D J Newman
2000 Gravitational and space biology bulletin : publication of the American Society for Gravitational and Space Biology  
in the extreme environments of microgravity and partial gravity.  ...  This review of astronaut extravehicular activity (EVA) and the details of American and Soviet/Russian spacesuit design focuses on design recommendations to enhance astronaut safety and effectiveness.  ...  The pelvis is tilted downward about five degrees on the swing phase side. This occurs with pelvic adduction at the hip joint on the stance phase side.  ... 
pmid:11543279 fatcat:iupp5dmzovbu3bhl3ku7i4b7lm

Feasibility of Submaximal Force Control Training for Robot–Mediated Therapy After Stroke [chapter]

Guillermo Asín-Prieto, Aitor Martínez-Expósito, Fady Alnajjar, Shingo Shimoda, José L. Pons, Juan C. Moreno
2018 Biosystems and Biorobotics  
The research presented in this thesis has been funded by the Commission of the European Union under the BioMot  ...  ACKNOWLEDGEMENTS This work has been carried out at the Neural Rehabilitation Group (NRG), Cajal Institute, Spanish National Research Council (CSIC).  ...  Intermediary links and carriage screws are used to fix the plates to a desired position with respect to the ankle actuator (and thus ankle joint axis).  ... 
doi:10.1007/978-3-030-01845-0_51 fatcat:bqk7nuccgbhqnflye5jhqqlxiy

Control of Mammalian Locomotion by Somatosensory Feedback

Alain Frigon, Turgay Akay, Boris I. Prilutsky
2021 Comprehensive Physiology  
We then discuss experimental approaches and animal models used to investigate the control of locomotion by somatosensory feedback before providing an overview of the different functional roles of somatosensory  ...  When animals walk overground, mechanical stimuli activate various receptors located in muscles, joints, and skin.  ...  Acknowledgements We thank Jonathan Harnie for his help with some of the figures. We also thank Tatiana  ... 
doi:10.1002/cphy.c210020 pmid:34964114 fatcat:bnsdagxjmjdbxl62h5ejzw4iha

Concept Design and Dynamic Modelling of a Fibre-Based Continuum Robot for Early Cancer Detection Using DT-TMM [chapter]

Mathias Bærenholdt, Lidai Wang, Xuping Zhang
2018 Mechanisms and Machine Science  
The aging of population and shortage of resources is increasing the demand of novel robotic solutions and devices, as for example in assistance in medical treatments and rehabilitation.  ...  The content of MESROB 2018 book covers a wide range of aspects and topics such as assistive devices, exoskeletons, surgical robotics, locomotion systems, human-robot interactions, performance evaluations  ...  Acknowledgements We thank our colleague Jan Peters for assisting our research and for the exchange of ideas that helped us to prepare this article.  ... 
doi:10.1007/978-3-030-00329-6_21 fatcat:aln3r456enc3xoac4za6mz7x5i

Hindlimb extensor muscle function during jumping and swimming in the toad (Bufo marinus)

G B Gillis, A A Biewener
2000 Journal of Experimental Biology  
than the more distal knee and ankle joints.  ...  The onset of fascicle shortening is temporally staggered, with the knee extensors beginning to shorten first, prior to the hip and ankle extensors.  ...  We also thank Rich Marsh for very useful discussions regarding strain measurements in the cruralis.  ... 
pmid:11060216 fatcat:pu3p3qptmzebhlpz7qiuxjvima

Effect of light on the activity of motor cortex neurons during locomotion

Madison C. Armer, Wijitha U. Nilaweera, Trevor J. Rivers, Namrata M. Dasgupta, Irina N. Beloozerova
2013 Behavioural Brain Research  
This included differences in the mean discharge rate (19%, 28/146 of neurons), depth of stride-related frequency modulation (24%, 32/131), duration of the period of elevated firing ([PEF], 19%, 25/131)  ...  behavior of 49% (71/146) of neurons was different between the two walking conditions.  ...  Dan Griffiths for assistance with analyses. The research was supported by NIH grant R01 NS-058659 to INB.  ... 
doi:10.1016/j.bbr.2013.05.004 pmid:23680161 pmcid:PMC3787125 fatcat:n7nkfunwfrgvvashlvja7w674y
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