Step 4 - Define kinetic segments

Our next task is to define kinetic segments – these are just like kinematic segments in that they have a location and orientation in space, but they have inertial properties added to them.

To create a kinetic segment:

Create a new variable called LeftFootKinetic.
Under Function Type, select Kinetic Segment and for the function select From Segment A, long axis Z, inertial properties B.
For the Segment, chose LFO and for the Inertial Properties, select Foot Anthropometric Data.

Segment LFO was calculated previously as part of a Plug-In Gait calculation and saved to the sample C3D provided. If you choose, you can create your own kinematic segment from a different definition.
You can now repeat this process for the tibia (LTI/RTI), femur (LFE/RFE) and pelvis (PEL). Be sure to select the corresponding inertial properties for each segment. Copy and mirror as appropriate.

Important
Note these points about default anthropometric data in ProCalc 1.6 and later:

After you have opened ProCalc 1.6 at least once, an XML file (AnthropometricData.xml) is added to the folder C:\Users\Public\Documents\Vicon\Eclipse\InputParamSchemes.
Inertial properties within the XML have been extracted from Dempster, WT. (1955) Space requirements of the seated operator. WADC Technical Report 55–159, Wright-Patterson Air Force Base, OH.
Segment center-of-mass (CoM) is specified relative to the distal end of the joint.
Radius of Gyration (RoG) is specified about the segment CoM.
If you wish to add or change the anthropometric data used by ProCalc for the kinetics, you can open and edit this file as long as you maintain the same file structure. Note the above points about how each inertial property was specified.
All custom entries must have names that end in Anthropometric Data (eg, Custom Anthropometric Data).