Inverse dynamics ankle joint moment is zero

I used the VICON three position capture system and the AMTI force measuring board to record the C3D file of the upstairs process. The file is imported into ANYBODY, and the lower limb model is used to conduct inverse dynamic analysis on the process of going upstairs. The obtained joint moments are quite different from those described in other literatures, especially the ankle joint moments, which are almost zero. How can I get the correct joint torque?

This thread is closed as it is a duplicate of the thread over here Inverse dynamics ankle joint torque is almost zero - Main Forum - AnyScript forum.