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A breakthrough offer of hope for individuals living with complete spinal cord injuries comes from pioneering Italian research conducted at the MINE laboratory, a joint initiative between the IRCCS San Raffaele Hospital and the Sant'Anna School of Advanced Studies in Pisa. Led by Pietro Mortini and Silvestro Micera, the landmark study, published in Med - Cell Press, enabled four patients with chronic thoracic paralysis to stand and walk using a walker.
The breakthrough relies on an innovative approach to epidural electrical stimulation known as Trunk-Mediated Control (TMC). Rather than depending on complex brain-decoding algorithms, the system allows patients to guide their locomotion through a simple, natural movement: a subtle, 9-degree extension of the torso. This slight movement alters the stimulation's impact on underlying nerve structures, smoothly transitioning between the leg extension required to bear weight and the coordinated hip, knee, and ankle flexion needed to step forward. Without regaining voluntary muscle contraction, all four participants navigated slopes, turns, and uneven outdoor surfaces, with one participant covering a record 132 meters in 42 minutes, a historic milestone that reshapes the future of neurorehabilitation.
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