4. Estimating muscle-tendon length (+hands-on)

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Last updated: Sept 20, 2022

In this lecture we will go through two approaches to estimate muscle-tendon lengths. We will discuss the advantage and disadvantage of each approach. Please, find the lecture slides from the link below:


In the hands-on part of the lecture we will:

1) learn how to modify anatomical coordinate systems and joint degrees-of-freedom in an OpenSim model using notepad++

2) learn how to create kinematic .mot files from the output of the clinical gait model, i.e. .c3d files

3) plot muscle-tendon length and compare the outcome between different models 


Please, download the example test.mot file, the gait2392_simbody.osim and gait2392_AlteredPelvisFrame3DoFkneeNoTorso.osim models from the links below:

OpenSim is supported by the Mobilize Center , an NIH Biomedical Technology Resource Center (grant P41 EB027060); the Restore Center , an NIH-funded Medical Rehabilitation Research Resource Network Center (grant P2C HD101913); and the Wu Tsai Human Performance Alliance through the Joe and Clara Tsai Foundation. See the People page for a list of the many people who have contributed to the OpenSim project over the years. ©2010-2024 OpenSim. All rights reserved.