Objective: To examine the criterion validity of lower extremity Motricity Index scores.
Design: Retrospective cross-sectional comparison of lower extremity Motricity Index scores and hand-held dynamometer measurements obtained from 15 patients with stroke.
Results: For individual actions (ankle dorsiflexion, knee extension and hip flexion) and all actions combined, Pearson correlations were good to excellent (r = 0.78–0.91), significant (p < 0.001), and of high power (9%).
Conclusions: The findings of this study support the criterion validity of the lower extremity Motricity Index.
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