I DOWNLOADED OPENSIM - NOW WHAT?
This introductory tutorial at the 2015 Gait and Clinical Movement Analysis Society (GCMAS) annual meeting provides hands-on lessons for getting started with OpenSim.
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Prepartion for the Tutorial
Enrolled participants should bring a Laptop running Windows operating system and OpenSim installed.
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OpenSim is hosted on SimTK, a cloud storage service for biomedical tools and research. Download OpenSim 3.2. There here are 32- and 64- bit versions available and are designed to correspond with your system requirements. If you are unsure how to find this out; click here.Papers to read
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Download OpenSim 3.2. |
Download Notepad++
OpenSim models and setup files are written in xml. These xml files are a convenient way of storing, transferring and editing OpenSim models and analyses. Notepad++ is an xml editor that makes it easier to view and edit xml files. During the tutorial we will use Notepad++ to explore the structure of the an OpenSim model.
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Download Notepad++ |
Download GCMAS tutorial (add zip tutorial folder)
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Instructions for testing installation
Workshop Staff and Contact Information
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Instructors
Allison Arnold-Rife (aarnold@oeb.harvard.edu) Concord Field Station, Harvard University
| Apoorva Rajagopal (apoorvar@stanford.edu) Neuromuscular Biomechanics Laboratory, Stanford University
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Support Staff
Chris Carty (c.carty@griffith.edu.au au) School of Allied Health Sciences, Griffith University
| James Dunne (james.dunne@stanford.edu) Neuromuscular Biomechanics Laboratory, Stanford University
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Tutorial Exercises and Demos
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Tutorial Slides
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Tutorial Exercises and Demos
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Intended Audience: The tutorial is designed for GCMAS attendees (scientists, clinicians, and students) who are curious about the capabilities of OpenSim, but who have not previously used the software.
Prerequisite Knowledge:
Participants will be asked to bring (or share with a colleague) a laptop PC with a mouse and with OpenSim and Notepad++ installed. Instructions for installing and getting started with these programs (both freely available) will be emailed to participants prior to the tutorial. To complete the hands-on exercises, participants must be comfortable navigating to files and managing multiple windows on their laptops. Participants will work in small teams at their own pace (guided by instructors), so exercises will be accessible to participants with varying backgrounds.
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Learning Objectives:
1. Identify components of a musculoskeletal model in OpenSim and in the model’s XML file.
2. Load a model in OpenSim and animate it using measured joint angles and/or marker trajectories.
3. Use an OpenSim model to examine whether muscle force- or moment-generating capacity
changes substantially following a simulated surgery.
4. Describe the steps needed to process motion capture and GRF data for input into OpenSim.
5. List three limitations of existing OpenSim tools and three features to watch for in upcoming
releases.
6. Locate OpenSim online resources, documentation and examples for further exploration.
Content: Minutes
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− What is OpenSim and what can the software do?
− What will this tutorial cover?
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Background Reading
We recommend reviewing the following resources to lean more about OpenSim
Useful Links
National Center for Simulation Research (NCSRR)
OpenSim Documentation (Confluence)
Overview of the OpenSim Workflow
Relevant Literature
OpenSim: Open-Source Software to Create and Analyze Dynamic Simulations of Movement
Scott L. Delp, Frank C. Anderson, Allison S. Arnold, Peter Loan, Ayman Habib, Chand T. John, Eran Guendelman, and Darryl G. Thelen
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, VOL. 54, NO. 11, NOVEMBER 2007
Is My Model Good Enough? Best Practices for Verification and Validation of Musculoskeletal Models and Simulations of Movement
Jennifer L. Hicks, Thomas K. Uchida, Ajay Seth, Scott L. Delp.
Journal of Biomechanical Engineering, Volume 137, Issue 2, 2015
Muscle contributions to vertical and fore-aft accelerations are altered in subjects with crouch gait
KM Steele, A Seth, JL Hicks, MH Schwartz, SL Delp
Gait & posture 38 (1), 86-91
Can biomechanical variables predict improvement in crouch gait?
JL Hicks, SL Delp, MH Schwartz
Gait & posture 34 (2), 197-201
Crouched postures reduce the capacity of muscles to extend the hip and knee during the single-limb stance phase of gait
JL Hicks, MH Schwartz, AS Arnold, SL Delp
Journal of biomechanics 41 (5), 960-967