Optimal indices for testing parkinsonian rigidity.

  title={Optimal indices for testing parkinsonian rigidity.},
  author={H Ter{\"a}v{\"a}inen and Joseph King Ching Tsui and Eileen Mak and Donald B. Calne},
  journal={The Canadian journal of neurological sciences. Le journal canadien des sciences neurologiques},
  volume={16 2},
We assessed parkinsonian rigidity objectively at the wrist to determine the optimal angular velocity and displacement for detecting abnormality. The wrist was moved passively with a torque motor and the average work done for one complete cycle was computed. This objective rigidity score (ORS) was compared with a clinical rigidity score (CRS). ORS was more pronounced at faster movement velocities in parkinsonian patients, whereas in normal subjects there was only a modest increase in the score… CONTINUE READING


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