Entity

Time filter

Source Type

Erie, PA, United States

Schmitz A.,University of Wisconsin - Madison | Buczek F.L.,Lake Erie College | Bruening D.,Shriners Hospitals for ChildrenR | Rainbow M.J.,Harvard University | And 2 more authors.
Computer Methods in Biomechanics and Biomedical Engineering | Year: 2015

The objective of this study was to determine how marker spacing, noise, and joint translations affect joint angle calculations using both a hierarchical and a six degrees-of-freedom (6DoF) marker set. A simple two-segment model demonstrates that a hierarchical marker set produces biased joint rotation estimates when sagittal joint translations occur whereas a 6DoF marker set mitigates these bias errors with precision improving with increased marker spacing. These effects were evident in gait simulations where the 6DoF marker set was shown to be more accurate at tracking axial rotation angles at the hip, knee, and ankle. © 2015 Taylor & Francis Source


Schmitz A.,University of Wisconsin - Madison | Buczek F.L.,Shriners Hospitals for ChildrenR | Buczek F.L.,Lake Erie College | Bruening D.,Shriners Hospitals for ChildrenR | And 3 more authors.
Computer Methods in Biomechanics and Biomedical Engineering | Year: 2016

The objective of this study was to determine how marker spacing, noise, and joint translations affect joint angle calculations using both a hierarchical and a six degrees-of-freedom (6DoF) marker set. A simple two-segment model demonstrates that a hierarchical marker set produces biased joint rotation estimates when sagittal joint translations occur whereas a 6DoF marker set mitigates these bias errors with precision improving with increased marker spacing. These effects were evident in gait simulations where the 6DoF marker set was shown to be more accurate at tracking axial rotation angles at the hip, knee, and ankle. © 2015 Taylor & Francis. Source

Discover hidden collaborations