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Stroke recovery theories challenged by new studies looking at brain lesions, bionic arms

Stroke is the country's leading cause of disability, leaving millions with residual arm and leg weakness. However, efforts have usually focused on stroke prevention and acute care. Now, two new studies suggest that stroke survivors left weakened or partially paralyzed may be able to regain more arm and hand movement even years after a stroke -- information that clinicians may not know or pass on to their patients.
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