Epidural spinal cord stimulation for movement recovery

Electrical stimulation delivered by an electrode array over the dorsal lumbosacral spinal cord, below a spinal-cord injury, that modulates the excitability of surviving circuitry so residual descending commands and afferent input can again produce coordinated movement. Modern approaches use spatiotemporally patterned, activity-specific stimulation timed to the intended movement phase, sometimes driven by a brain-spine interface that decodes cortical intent and controls the spinal stimulator — restoring a volitional, contingent link across the lesion.

Honesty: in small numbers of participants this has enabled remarkable volitional stepping and standing, and — importantly for this field — repeated training with stimulation has produced some recovery that persists even with the stimulator off, implying genuine plasticity rather than a mere prosthetic bypass. But cohorts are tiny, protocols are highly individualized and surgically intensive, benefits vary with lesion completeness, and durable, generalizable functional recovery remains to be proven at scale.