Dear AnyBody support team,
1-I am trying to measure the forces on the L3 vertebra and also on the L3L4 joint in the spinefixationwithforcedependantkinematics during flexion, I just want to make sure that the details of the anyscript I am using are correct?:
AnyForceMomentMeasure2 ForceMeasure2 = {
RefPoint = &Main.Model.EnvironmentModel.GlobalRef;
IncludeSegments = {&Main.HumanModel.BodyModel.Trunk.SegmentsLumbar.L3Seg};
IncludeForces = {&Main.HumanModel.BodyModel.Trunk.MusclesSpineRight.Multifidi.MFdL1L3, &Main.HumanModel.BodyModel.Trunk.MusclesSpineRight.Multifidi.MFdL3L5, &Main.HumanModel.BodyModel.Trunk.MusclesSpineRight.Multifidi.MFmL3S1, &Main.HumanModel.BodyModel.Trunk.MusclesSpineRight.Multifidi.MFtsL3Ligament, &Main.HumanModel.BodyModel.Trunk.MusclesSpineLeft.Multifidi.MFdL1L3, &Main.HumanModel.BodyModel.Trunk.MusclesSpineLeft.Multifidi.MFdL3L5, &Main.HumanModel.BodyModel.Trunk.MusclesSpineLeft.Multifidi.MFmL3S1, &Main.HumanModel.BodyModel.Trunk.MusclesSpineLeft.Multifidi.MFtsL3Ligament};
IncludeGravity = On;
2-Also when using this script I get three lines in the chart, blue, orange and green. what does each one resembles?
3-The force I get is constant value of -20 N...please let me know why do I get this specific value and why it doesn't change with the motion?
4- How can I measure the forces and moments on the L3L4 joint. When I tried using AnyForceMomentMeasure, I got the following errors:
- when adding L3L4Jnt as segment:
ERROR(OBJ8) : SpineFixationWithForceDependentKinematics.main.any(161) : ForceMeasure2.IncludeSegments : Type restricted object-pointer has been linked with object L3L4Jnt of unacceptable class AnySphericalJoint
Allowed classes are: AnySeg
b) when adding L3L4Jnt as RefPoint:
ERROR(OBJ8) : SpineFixationWithForceDependentKinematics.main.any(160) : ForceMeasure2.RefPoint : Type restricted object-pointer has been linked with object L3L4Jnt of unacceptable class AnySphericalJoint
Allowed classes are: AnyRefFrame
...or should I use the reaction forces for joints forces, for example: (Main.Study.Output.Model.BodyModel.SelectedOutput.Trunk.JointReactionForce.L3L4ProximoDistalForce). For the moment I only see moment for cervical joints not lumbar, how can I measure moments on lumbar joints?
Thank you very much