Excellent idea, it works great, thank you!

Hi, I would like to ask what the difference is between 'Final Average Residuals' and 'Average residuals after adjusting torso COM' provided in the message at end of the RRA analysis. My 'Average residuals after adjusting torso COM' are all low but 'Final Average Residuals' have high Mx: ************...

Thank you, Ayman. I will check the file paths thoroughly.
Martin

Thank you, Tom.

I will check the effect of path geometry on muscle moment arms and follow your suggestion on scaling the optimal fiber length and tendon slack length.

Martin

Thank you for your suggestions. I ascribe the troubles with simulations to moving the files to a new folder, thus changing the paths. I have been using the forward dynamics just to evaluate the effect of an action of one or two muscles (tib_post_r and its parts) on ankle motion and forces using my m...

I managed to solve the errors with RRA and SO by recreating the SIMM_input_grf.xml.

Forward dynamics is still giving the same error...

Hi, suddenly all analyses in OpenSim give me an error: RRA RRA.JPG Exception: Storage: ERROR- failed to open file C:\Users\L\Desktop\BiG Projects\Walk&RunMechanics\V3DtoOS_2017_10_23\Visual3d_SIMM_grf.mot file= C:\OpenSim33\src\opensim32\OpenSim\Common\Storage.cpp line= 127 Static optimization SO.JP...

Hi Erica,

Yes, Joint reaction analysis will calculate forces and moments for weld joint - I am using weld joint at tibial midshaft and Joint reaction plugin calculates forces and moments at the midshaft for me.

Martin

Hi, fellow workshop-attendees, I modified the gait2392 model so now the shank segment is made of two bodies (proximal and distal tibia) connected via a weld joint at the tibial midshaft. I aim to use joint reaction force plugin to estimate forces and moments at the midshaft. Anatomically, some muscl...