TY  - JOUR
PY  - 2015//
TI  - Comparison of hierarchical and six degrees-of-freedom marker sets in analyzing gait kinematics
JO  - Computer methods in biomechanics and biomedical engineering
A1  - Schmitz, Anne
A1  - Buczek, Frank L.
A1  - Bruening, Dustin
A1  - Rainbow, Michael J.
A1  - Cooney, Kevin
A1  - Thelen, Darryl
SP  - 199
EP  - 207
VL  - 19
IS  - 2
N2  - 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.<p />  <p>Language: en</p>
LA  - en
SN  - 1025-5842
UR  - http://dx.doi.org/10.1080/10255842.2015.1006208
ID  - ref1
ER  -