2.5. Coordinate system considerations for joint mechanical testing

Data acquisition system, simVITRO®, utilizes “right knee abstraction” for control and data collection so that the data from multiple specimens can easily be combined regardless of whether or not the specimen was actually from the right or left side. However, for specimen specific modeling and combining kinematic data with imaging data sets, the data, including kinematics-kinetics information and coordinate transformation matrices may need to be transformed back to “physical representation” for the left knees to achieve appropriate description in the physical space. The transformations are mirroring operation. Further details are available in the documentation on knee coordinate systems provided on the data site [1] available in the ‘doc’ folder.