Evaluation of Motor Function in Stroke Patients Using the Stroke Impairment Assessment Set (SIAS)
We have developed the Stroke Impairment Assessment Set (SIAS) as a global measure of stroke impairment. This chapter reviews our recent research on motor function in stroke patients using the SIAS. The affected-side motor assessment items of the SIAS were found to be reliable and valid for evaluating hemiplegia by employing the concepts of both synergy and muscle strength. The motor SIAS score was strongly correlated with the Brunnstrom stage (Spearman’s r =. 694−.939) and the manual muscle testing score (Spearman’s r =.870−.958). However, some dispersion was caused by differences in the definitions employed by these scales. A longitudinal study indicated that motor SIAS items were more sensitive for detecting motor recovery after stroke than the Brunnstrom stage or manual muscle testing. The recovery of motor function at discharge could be predicted by the SIAS depending on whether the score on admission was 0 (no voluntary movement) or 1 (minimal voluntary movement). A cross-sectional study showed that unaffected-side function was an important factor in relation to disability, while a longitudinal study demonstrated that unaffected-side function also improves during rehabilitation (grip strength was 23.51kg on admission and 25.54kg on discharge; n = 75, P <. 01). Therefore, unaffected-side function should also be measured when assessing stroke impairment.
KeywordsStroke Patient Grip Strength Motor Recovery Manual Muscle Testing Unaffected Side
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