<t>Hi Ayman, <br/> <br/> What is the criteria for defining RRA residuals are bad or good?<br/> I got values as follows. <br/> <br/> Average Residuals:<br/> <br/> FX average = -12.0391<br/> FY average = 76.2288<br/> FZ average = -24.047<br/> MX average = -72.8873<br/> MY average = 33.0188<br/> MZ ave...

Hi Becca,
Thank you for the info. I am wondering which version of OpenSim you are using for your work.
I am a little bit hesitating to switch to OpenSim 2.0 or higher version because of the stability issue.

Kang

Hi Rebecca,

Thanks for your response. I am working on modeling stair climbing of injured knee. I get excessive large residual forces. I am wondering if you have ever get the large force. If so, are you able to correct it using RRA?

Best,

Kang

I am wondering if anyone have ever used CMC to simulate other activity such as stair climbing?
The RRA only work for gait and walking, is it right?

If we change the femur and tibia geometry files,
will the contact point between femur and tibia be affected? How is the contact point determined?

Can we use contact geometry set to specify the contact point?

I am also interested in that.
If the geometry of knee is different than the one used in the gait2392, can you use contact geometry set to specify the contact point?

<t>What is the difference between <br/> CoordinateCouplerConstraint and TransformAxis?<br/> <br/> In Andrea's question, the knee_tx_r is specified by a CoordinateCouplerConstraint but in other gait models, it is specified using TransformAxis.<br/> So <TransformAxis name="translation1"><br/> <functio...

<t>When I use opensim to open the gait2392 model in the example, I notice that there is a file called<br/> vtklog.log generated. <br/> It shows that <br/> " <br/> ERROR: In C:\eran\dev\VTK\Filtering\vtkDemandDrivenPipeline.cxx, line 710<br/> vtkStreamingDemandDrivenPipeline (0F4F94E8): Input port 0 ...

Thanks a lot.

Hi ,
has anyone developed a model with patella?
I am wondering where we can find the muscle path and other relevant parameters.
Thanks.