Hello, I have a question concerning the Static Optimization (SO) workflow in OpenSim and its treatment of bi-articular muscles. I understand that the static optimization process calculates the joint moments at each time point based on the input motion data, then uses an optimization algorithm to dis...

I got your point.
So, unlocking all the coordinate is more of a practical where the muscles crosses more than one joint.

Thank You

Hi Thomas, Thank you very much for the reply and pointing me to the tutorials. I have already gone through those tutorials but don't know why I am still struggling with it. I have used MoBL-ARMS Upper Extremity Dynamics Model, I have locked the coordinates as shown in Figure below to generate a FD f...

- unlock the arm coordinates - estimate muscle forces using the Static Optimization or CMC Tool If I am interest only in the elbow flexion, can I just unlock the elbow_flexion coordinate from "MoBL_ARM_Dynamics_Model". I tried with only elbow_flexion coordiante ON and with all other coordiantes on ...

Hi, I am looking to estimate the muscle force for the elbow flexion (from 0 to 90 degree) with the muscle force generation capacity of 50th percentile man. I have used the Upper Extremity Dynamic Model (latest one). I have gone through the tutorial and made a similar motion file that includes all th...

Hello,
I was wondering whether this model is suitable for SO or CMC ?
I want to use to calcualte the muscle force for some defined pose only not for the motion.

Thank You

Thank you very much for the reply. It will be the beginning point for me. I have been going through all the papers published for shoulder models. So, combination of both should work.

Hi, I am just a begineer to the OpenSim, I was wondering if we can use the Musculoskeletal Model avaiblae in the OpenSim to obtain the muscle forces for fixed pose. For an example, if I rotate my Glenohumeral (GH) Joint to 90 degree internally and have 30 degree elbow flexion followed by 20 degree G...

Hi, I am currently working on Cross Body Abduction (CBA) and Hand Behind the Back (HBB) Test. I have a set of rotation associated with Glenohumeral, Wrist and Elbow joint that will lead me to the final pose for CBA and HBB from anatomical position of the shoulder complex. I want to calculate the mus...