The presentations of spasticity are variable and are not always consistent with existing definitions. Existing clinical scales that depend on the quantification of muscle tone may lack the sensitivity to quantify the abnormal muscle activation and stiffness associated with common definitions of spasticity. Neurophysiological measures may provide more clinically useful information for the management and assessment of spasticity.

Individuals with no arm function within three weeks of stroke may benefit functionally from botulinum toxin. Using the effect size of 0.5, further studies would need a minimum of 101 participants in each group to confirm this finding.

The accurate identification of spasticity is important not only for assessment but also for the selection of appropriate treatments after stroke.

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