Hi all, Thanks William for your reply. In the end, your suggestion would work, however, I think there is a easier one: If you have no translation as a function of an angle (i.g. as one would find in the knee) and if the joint is defined as a pure rotation only (i.g. hip joint), you can add a marker ...

Hi Matthew, Which joint center do you like to export? There is a workaround for ball-socket-joints, however, for knee joints (joints that are including translation) the way is more complex. I'm also searching for the same problem. For a ball-socket-joint: First, you can attach a marker to the exact ...

Dear Sherm, Thank you for your answer and for forwarding the question to Ajay Seth. Unfortunately, I have not received a response regarding the CoR of the knee. It would be very helpful for my further research to get this information. However, I tried to calculate the CoR of the knee by myself. To c...

Dear Sherm, I wish you a happy new year and thank you for your answer and your paper. Corresponding your paper, I noticed, that my assumption (the center of rotation (CoR) of the knee is [0 0 0] on the tibia) is not usable due to the sliding fact of the tibia as a function of the knee angle. Now, my...

Dear Sherman, Thanks for your reply, but I have to clarify myself. I applied a force directly on the knee joint while changing the knee angle. But as a consequence of the translation and rotation of the knee joint as a function of the angle, I also changed the point where the force applies. That mea...

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Dear all, For this example I used the gait2392_simbody model but set the mass of the whole foot and tibia of both legs to 0. By applying a force directly on the center of rotation of the knee (basically on tibia [0 0 0]) and performing the inverse dynamics tool, the moment in the knee is surprisingl...