Motion path of the instant center of rotation in the cervical spine during in vivo dynamic flexion-extension: implications for artificial disc design and evaluation of motion quality after arthrodesis.

@article{Anderst2013MotionPO,
  title={Motion path of the instant center of rotation in the cervical spine during in vivo dynamic flexion-extension: implications for artificial disc design and evaluation of motion quality after arthrodesis.},
  author={William Anderst and Emma Baillargeon and William Fielding Donaldson and Joon Yung Lee and James D. Kang},
  journal={Spine},
  year={2013},
  volume={38 10},
  pages={E594-601}
}
STUDY DESIGN Case-control. OBJECTIVE To characterize the motion path of the instant center of rotation (ICR) at each cervical motion segment from C2 to C7 during dynamic flexion-extension in asymptomatic subjects. To compare ICR paths in asymptomatic subjects and patients with single-level arthrodesis. SUMMARY OF BACKGROUND DATA The ICR has been proposed as an alternative to range of motion (ROM) for evaluating the quality of spine movement and for identifying abnormal midrange kinematics… CONTINUE READING
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