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http://dx.doi.org/10.9718/JBER.2010.31.4.275

Quantification of Clinical assessment of Rigidity in patients with Parkinson's Disease  

Lee, Jae-Ho (School of Biomedical Engineering, Konkuk University)
Kim, Ji-Won (School of Biomedical Engineering, Konkuk University)
Kwon, Yu-Ri (School of Biomedical Engineering, Konkuk University)
Eom, Gwang-Moon (School of Biomedical Engineering, Konkuk University)
Koh, Seong-Beom (Department of Neurology, Korea University Hospital)
Kim, Hyung-Sik (School of Biomedical Engineering, Konkuk University)
Yi, Jeong-Han (School of Biomedical Engineering, Konkuk University)
Lee, Jeong-Whan (School of Biomedical Engineering, Konkuk University)
Publication Information
Journal of Biomedical Engineering Research / v.31, no.4, 2010 , pp. 275-279 More about this Journal
Abstract
The purpose of this study was to quantify the clinical assessment of rigidity at wrist in patients with Parkinson's disease. The experimental system was designed that the effect of gravity was negated by restricting motion at the horizontal plane and inertia was predetermined from a biomechanical measurement. Forty five patients with Parkinson's disease participated in this study. Viscoelastic properties were calculated from the experimental data acquired during intermittent passive movement of wrist. Viscoelastic constants correlated well with the rigidity scores of UPDRS, i.e., Spearman's r=0.733 and 0.905 for spring and damping constants, respectively. The results suggest that viscoelastic properties can be used as quantitative measures of rigidity.
Keywords
Parkinson's disease; UPDRS; rigidity; quantification; viscoelasticity;
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