Researchers have demonstrated that epidural stimulation of the cervical spinal cord can safely restore arm function in patients with chronic stroke-related paralysis, according to findings published in Nature Medicine. The feasibility trial involved seven participants with arm hemiparesis who showed measurable improvements in strength, motor function, and reduced spasticity following treatment.
Unlike previous interventions targeting the brain, this approach activates preserved neural circuits below the stroke lesion by implanting electrodes directly onto the spinal cord surface. The procedure was well-tolerated across all participants, establishing critical safety parameters for the field. While the sample size remains small, these results represent an important proof-of-concept that could reshape rehabilitation strategies for the millions of stroke survivors experiencing persistent motor disabilities worldwide.
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