Measurement of lower extremity kinematics during level walking

@article{Kadaba1990MeasurementOL,
  title={Measurement of lower extremity kinematics during level walking},
  author={Murali P. Kadaba and H. K. Ramakrishnan and Mary E. Wootten},
  journal={Journal of Orthopaedic Research},
  year={1990},
  volume={8}
}
A simple external marker system and algorithms for computing lower extremity joint angle motion during level walking were developed and implemented on a computer‐aided video motion analysis system (VICON). The concept of embedded axes and Euler rotation angles was used to define the three‐dimensional joint angle motion based on a set of body surface markers. Gait analysis was peformed on 40 normal young adults three times on three different test days at least 1 Week apart using the marker… 
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