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21 projects in result set. Displaying 20 per page. Projects sorted by alphabetical order.
<1> <2>
OpenSim
- OpenSim is a freely available, user extensible software system that lets users develop models of musculoskeletal structures and create dynamic simulations of movement.
Find out how to join the community and see the work being performed using OpenSim at <a href="http://opensim.stanford.edu">opensim.stanford.edu</a>.
Access all of our OpenSim resources at the new <br /><a href="http://opensim.stanford.edu/support/index.html"><b style="color:#900; font-size:16px;">Support Site</b></a>.
Watch our <a href="http://www.youtube.com/watch?v=ME0VHfCtIM0">Introductory Video</a> get an overview of the OpenSim project and see how modeling can be used to help plan surgery for children with cerebral palsy.
<iframe width="560" height="315" src="https://www.youtube.com/embed/ME0VHfCtIM0" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe> | |
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Registered: 2006-03-23 18:48 |
Open Knee(s): Virtual Biomechanical Representations of the Knee Joint
- Open Knee(s) was aimed to provide free access to three-dimensional finite element representations of the knee joint (<A HREF="https://doi.org/10.1007/s10439-022-03074-0">https://doi.org/10.1007/s10439-022-03074-0</A>). The development platform remains open to enable any interested party to use, test, and edit the model; in a nut shell get involved with the project.
This study was primarily funded by the National Institute of General Medical Sciences, National Institutes of Health (R01GM104139) and in part by National Institute of Biomedical Imaging and Bioengineering (R01EB024573 and R01EB025212). Previous activities leading towards this project had been partially funded by the National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health (R01EB009643).
Open Knee(s) by Open Knee(s) Development Team is licensed under a <A HREF="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</A>.
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Registered: 2010-02-18 20:41 |
OpenSim Advanced Users Workshop, August 12-14, 2009
- This workshop covers advanced topics in OpenSim, an easy-to-use, extensible software for modeling, simulating, controlling, and analyzing the neuromusculoskeletal system. The workshop is an opportunity to learn more about how OpenSim works "under the hood" and get supervised, hands-on assistance with problems participants bring to the workshop. On the first day, a conceptual overview of OpenSim will be provided. The second and third days will be devoted to working on problems participants bring to the workshop. Participants have the opportunity to work in small breakout groups with OpenSim experts on their research problems. | |
Registered: 2009-08-07 22:39 |
SCONE: Open Source Software for Predictive Simulation
- If SCONE is helpful for your research, please cite the following paper:
Geijtenbeek, T (2019). SCONE: Open Source Software for Predictive Simulation of Biological Motion. Journal of Open Source Software, 4(38), 1421, https://doi.org/10.21105/joss.01421 | |
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Registered: 2016-10-27 13:07 |
CoBi Core Models, Data, Training Materials
- This project contains a variety of materials from Computational Biomodeling (CoBi) Core of the Cleveland Clinic, relevant to physics-based simulation of the biomechanical system. These may include various published/unpublished models, data, and training material generated through various small projects. | |
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Registered: 2010-10-07 13:09 |
Tim's OpenSim Utilities
- This project site is concerned with extending the functionality of OpenSim through the use of scripting tools and plugins.
Click on the downloads link to browse the set of freely available OpenSim tools for download.
*******************************************************
Previously delivered interactive webinars demonstrating
the use of the Pseudo-Inverse Induced Acceleration
plugin for OpenSim (IndAccPI).
http://www.stanford.edu/group/opensim/support/webinars.html
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Registered: 2009-09-01 00:52 |
Easy-to-use interactive musculoskeletal simulations and curriculum (OpenSim).
- This project brings "life" to the physical sciences. Its curriculum and simulations are correlated with National and State Standards for Physics and the Physical Sciences and helps high-school, college, and professionals combine biology with physics. | |
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Activity Percentile: 59.54 Registered: 2010-08-28 02:06 |
Framework for Predictive Simulation of Treadmill Gait
- This project was divided into two tasks:
(1) We created a simple model of a block on a treadmill to understand how to develop a framework to track and predict motion between a moving platform and a body moving relative to it. We simulated the block falling, rotating, and translating to mimic heel strike, heel rocker, and translation of the foot posteriorly with respect to the treadmill.
(2) Modified the example2DWalking musculoskeletal model and MATLAB code to track and predict treadmill gait at slow, comfortable, and fast belt speeds.
What is included in the download:
(1) Block Model
- Model files (.osim) - note model file is the same for the translation & falling simulations,
but slightly different for rotation, so there are 2 different model files
- Manually generated reference coordinates data (.sto) for each tracking problem
- MATLAB scripts (.m) written to track & predict each block motion
(2) Treadmill Gait Model
- Model files (.osim) - note the treadmill speed is defined in the model so the model files
are different for each speed condition, so there are 3 different model files
- Reference coordinates data for tracking problems (.sto)
- One MATLAB script to track & predict treadmill gait (.m)- note: this script asks the user to
select their model file from the current folder, so just be sure to select the desired speed
condition
- Solutions generated from tracking & predictive problems for all three speeds
Note: To perform comparison with the overground gait simulation described in the manuscript run the example2DWalking code in the OpenSim Moco download.
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Registered: 2022-03-08 12:50 |
Fiber Tractography for Finite-Element Modeling of Transversely Isotropic Tissues
- This project demonstrates the process for fiber tractography of complex biological tissues with transverse isotropy, such as tendon and muscle. This is important for finite element studies of these tissues, as the fiber direction must be specified in the constitutive model. This project contains code, models, and data that can be used to reproduce the results of our publication on this technique. The supplied instructional videos will enable researchers to easily and efficiently apply this method to a variety of other tissues. The software used in the fiber tractography process and demonstrated in this project is Matlab, Autodesk Inventor (free for educators), and Autodesk Simulation CFD (free for educators). Full demonstrations and process instructions can be found in the 7 videos posted at https://vimeo.com/album/3414604:
Contents:
Chapter 1: Introduction (2:35)
This video introduces the CFD fiber tractography software pipeline
<!-- This version of the embed code is no longer supported. Learn more: https://vimeo.com/s/tnm --> <object width="500" height="281"><param name="allowfullscreen" value="true" /><param name="allowscriptaccess" value="always" /><param name="movie" value="https://vimeo.com/moogaloop.swf?clip_id=129107314&force_embed=vimeo.com&fullscreen=1" /><embed src="https://vimeo.com/moogaloop.swf?clip_id=129107314&force_embed=vimeo.com&fullscreen=1" type="application/x-shockwave-flash" allowfullscreen="true" allowscriptaccess="always" width="500" height="281"></embed></object>
Chapter 2: Supplementary materials code, models and data (20:21)
This video shows the shared models, code, and data posted online at simtk.org/m3lab_cfd4fea.
Chapter 3: Finite element simulations (5:38)
This video shows finite element simulations using the fiber mapping process.
Chapter 4: Iliacus example walkthrough (21:38)
This video shows the step-by-step process for fiber mapping the iliacus muscle (a hip flexor).
Chapter 5: Bflh example walkthrough (12:09)
This video shows the step-by-step process for fiber mapping the biceps femoris longhead muscle (a hamstring).
Chapter 6: Autodesk Inventor segmentation (9:09)
This video shows how to do segmentation of medical images in Autodesk Inventor in order to simplify the solid model for the CFD and FEA software.
Chapter 7: Curved inlet surfaces (6:28)
This video shows how to create curved inlet surfaces for use in Autodesk Simulation CFD. | |
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Activity Percentile: 36.64 Registered: 2015-05-28 18:52 |
Neuromusculoskeletal Modeling (NMSM) Pipeline
- <div style="display:inline-block"><a href="https://nmsm.rice.edu"><img src="https://nmsm.rice.edu/img/nmsm-pipeline-social-card.jpg" style="float:left;max-width:calc(100% - 40px);"></a></div>
Full project information is available at: https://nmsm.rice.edu. Please direct any inquiries about the NMSM Pipeline to us by posting your questions on this SimTK project forum or emailing nmsm@rice.edu.
Neuromusculoskeletal Modeling (NMSM) Pipeline is a set of tools for personalizing models and designing treatments for movement impairments and other pathologies.
The NMSM Pipeline consists of two toolsets:
Model Personalization - Personalize joint, muscle-tendon, neural control, and ground contact model properties.
Treatment Optimization - Design treatments using personalized models and an optimal control methodology.
At this time, Treatment Optimization requires the use of <a href="https://www.gpops2.com/">GPOPS-II optimal control solver</a>.
The NMSM Pipeline is written in MATLAB to lower the barrier for entry and to facilitate accessibility to the core codebase. We encourage users to modify the code to meet their needs.
The core codebase and examples are available to download for use in research. At this time, we ask that you wait to publish any work that uses the NMSM Pipeline until the journal article reference for the software is available. Please get in touch with us if you have any questions.
If you need help or want to start a discussion, please use the SimTK forum for this project.
Note: This project is a living entity. Updates will be made available as the Pipeline, examples, and tutorials are developed further and improved. | |
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Registered: 2022-07-07 14:55 |
Optimal Control Workshop
- This project provides files distributed at the NSF-funded Optimal Control Workshop held on July 9, 2015 at the University of Edinburgh as part of the XV International Symposium on Computer Simulation in Biomechanics. The workshop material was organized into three sections: 1) Motivational material, 2) Technical material, and 3) Tutorial material. Slides from each section, along with all tutorial material (requires a license of GPOPS-II optimal control software), are included. | |
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Activity Percentile: 0.00 Registered: 2015-08-01 16:35 |
CCIvsJointStiffness
- Muscle co-contraction generates joint stiffness to improve stability and accuracy during limb movement but at the expense of higher energetic cost. However, quantification of joint stiffness is difficult using either experimental or computational means. In contrast, quantification of muscle co-contraction using an EMG-based Co-Contraction Index (CCI) is easier and may offer an alternative for estimating joint stiffness. This study investigated the feasibility of using two common CCI’s to approximate lower limb joint stiffness trends during gait.
Please cite the following paper:
G. Li, M.S. Shourijeh, D. Ao, C. Patten, B.J. Fregly, How Well Do Commonly Used Co-Contraction Indices Approximate Lower Limb Joint Stiffness Trends during Gait?, Frontiers in Bioengineering and Biotechnology, 2020, DOI: 10.3389/fbioe.2020.588908 | |
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Registered: 2020-10-31 05:04 |
Muscle-Joint Contact Force Model
- Through implementation of contact geometry native to OpenSim, the project aims to model compressive loading on joints resulting from muscle activity via CMC *or* prescribed activation profiles in forward dynamics. Current model development pertains to knee joint compressive loading resulting from IT-Band tension and knee/hip kinematics. Extension of this framework to other key joints or body segments will allow full body analysis of such joint loading mechanisms. | |
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Registered: 2017-07-25 02:06 |
Biosimulation Education and Training
- Biosimulation education and training resources for Neuromuscular Biomechanics, RNA folding, Cardiovascular Dynamics, and Myosin Dynamics.
Course material can be found by clicking the documents link on the left menu. | |
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Activity Percentile: 0.00 Registered: 2006-08-02 20:35 |
Predictive framework for functional electrical stimulation (FES) cycling
- Enhancing the efficacy of spinal cord injury (SCI) rehabilitation is crucial for a patient’s optimal recovery. While functional electrical stimulation (FES) cycling stands as a standard therapy, achieving notable improvements proves challenging due to the inherent complexities embedded in the dynamics of the movement. Indeed, overcoming the time-consuming nature of cycling becomes imperative, prompting the development of predictive models through optimal control simulation. The current challenge lies in the demand for a specific framework that considers the unique intricacies of SCI FES cycling. In response, our innovative approach introduces a novel framework and showcases its application in solving predictive models. Leveraging open-source tools, including OpenSim and Blender, we built the FES cycling model. Subsequently, we outlined predictive problems within OpenSim Moco. This advancement mitigates the time-consuming constraints of prior methods. This improved avenue for simulating FES cycling for SCI rehabilitation paves the way for practical and time-effective integration of Digital Twins in clinical applications. | |
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Registered: 2018-07-18 14:14 |
OpenSim Developers Jamboree - October 28-30, 2009
- The developer's jamboree covers the OpenSim 2.0 API (to be released). This an opportunity to learn about how OpenSim is constructed and how to build on this foundation to meet your research and laboratory goals. On the first day, a brief architectural overview of OpenSim and commonly used SimTK libraries (e.g., Simbody) will be provided. In particular, we will describe OpenSim model components such as bodies, joints, constraints, forces, and controllers and demonstrate how to assemble these components into working models in coding exercises in the form of small main programs. The second and third days will be devoted to building and interacting with models programmatically including the development of custom components and analysis plug-ins. | |
Registered: 2009-10-01 23:25 |
OpenSim Developer Jamboree - July 12-14, 2010
- A Developer Jamboree covering advanced topics in OpenSim. This is an opportunity for software developers to learn more about how OpenSim works "under the hood" and get supervised, hands-on assistance with problems you bring to the workshop. A conceptual overview of the OpenSim API (Application Programming Interface) will be provided, followed by sessions where participants work on problems they bring to the workshop. Advanced OpenSim users may also attend and work on their research problems. For example, participants generate simulations from motion capture data collected in their lab, add arms to their gait model, or write a new muscle model or controller. Participants will have the opportunity to work in small breakout groups with OpenSim experts on these problems. | |
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Activity Percentile: 0.00 Registered: 2010-06-29 00:04 |
Extendable OpenSim-Matlab Infrastructure Using Class Oriented C++ Mex Interface
- The objective of this project is to provide an alternative interface between OpenSim and Matlab®, based on an extended C++ mex interface. Despite the fact that there is a user friendly OpenSim interface for Matlab, it lacks the ability to extend new functionalities based on the Java API (e.g. custom controller). Inspired by the relative project “Dynamic Simulation of Movement Based on OpenSim and MATLAB®/Simulink®”, where the user can easily interface OpenSim with Simulink, the proposed framework moves one step further by providing new capabilities to link custom written C++ OpenSim extensions to Matlab and to harvest both the powerful OpenSim C++ API and Matlab functionalities. The implementation is based on Matlab mex interface, which is further extended to support more complex functionalities based on the project mexplus. The latter is a C++ Matlab mex development kit that contains a couple of C++ classes and macros to make mex development easy in Matlab.
An example project is provided in the download section with instructions on how-to use. | |
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Activity Percentile: 0.00 Registered: 2015-09-28 14:09 |
Muscle function of overground running across a range of speeds
- This project is a repository of overground running data (3.5m/s 5.2m/s, 7.0m/s and 9.0m/s) along with a working musculoskeletal model to perform simulations and derive the function of individual muscles. | |
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Registered: 2011-08-07 14:01 |
Synergy Optimization: A plug-in to couple muscle activity in OpenSim
- The Synergy Optimization plug-in was developed to enable synergy-based control in OpenSim. It extends Static Optimization to let users specify a matrix of synergies to constrain and couple muscle activations. Beyond synergies, this plug-in can also be used to (1) provide varying weights to different actuators in static optimization or (2) require specific actuators to be activated together. | |
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Activity Percentile: 0.00 Registered: 2016-01-11 16:36 |
21 projects in result set. Displaying 20 per page. Projects sorted by alphabetical order.
<1> <2>