Hello everyone,

Why is the subtalar and mtp angles very abnormal in the normal gait when running the cmc program? The results of the RRA are normal.

thanks,
hongjie

Hello everyone, Why do the output results vary greatly when specifying the input state and the specified motion in the analysis tool input panel? When should I specify sports? When should I specify the status?The two figures below show the differences in analyzing joint forces. One specifies the mot...

Hello everyone,
I am learning to perform gait analysis with opensim. But the result of JointReaction is very strange, the result of JointReaction(figure 1) is very large, but I can't find the reason. Can someone help me?
thanks,
hongjie

Hi Thomas Thanks for the reply.I hava found active force-length relationship and passive force-length relationship.But I don't seem to find force-velocity relationship. And What is the relationship between 'Af' and 'force-velocity curve'?Where can I find the relationship between for force-velocity c...

Hello everyone,
I want to know the detailed calculation process of muscle force. I do not know how to determine the force-length relation and force-velocity relation of muscle. is there any method to determine the data?
thanks,
hongjie

Hello everyone, JointReaction prints results to one storage file with the suffix "_ReactionLoads.sto". This file contains rows of time-stamped data containing the 3 force and 3 moment vector components of the reaction load at each joint specified. Each data column label includes all information abou...

Hello everyone,

I want to know the detailed calculation process of Joint Reactions Analysis. I do not know how to determine the accelerations of tibia. is there any method to determine the data?
thanks,
hongjie

Hello everyone,

I want to know the detailed calculation process of Metabolic Cost. I do not know how to determine the maximum shortening velocity of the muscle? Whether it is a constant value or a change value for different muscles. How should I determine it?
thanks,
hongjie

Thank you very much for your help. Do you know how to determine the Scaling Factors(F_iso)?

Hello everyone, I want to know the detailed calculation process of Joint Reactions Analysis. I do not know how to determine the point of action and direction of muscle force. For example, the specific parameters of the direction of the muscle force and the size of the ellipse in the figure below. th...