CMC failure for large knee motion in v2.4

[Ruoli Wang]

Hi all,

I am using Gait 2392 model to simulate squat motion, no solution was found by the optimizer for knee flexion angle larger than 60 degrees in CMC. I have tried increase reserve and residual forces, muscle strength, nothing worked.

Code: Select all

SimTK Exception thrown at InteriorPointOptimizer.cpp:262:
Optimizer failed: Ipopt: Restoration failed (status -2)

Did anyone have suggestion how to solve it?

Thank you in advance,

Ruoli