Episodio – Selective dorsal rhizotomy en parálisis cerebral: cortar aferencia para bajar espasticidad | USMLE Step 1

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Niña de 6 años con parálisis cerebral espástica por lesión de sustancia blanca periventricular es sometida a rizotomía dorsal selectiva (selective dorsal rhizotomy), donde se seccionan rootlets (raíces) dorsales lumbosacras. En este episodio conectamos neuroanatomía y reflejos medulares para entender por qué esta cirugía disminuye el tono muscular al interrumpir la aferencia sensitiva del reflejo de estiramiento (stretch reflex), sin causar parálisis.#USMLEDreamers #USMLEStep1 #Neuroanatomía #ParálisisCerebral #Espasticidad #ReflejoDeEstiramiento #DorsalRoot #Rizotomía

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This episode was published on January 2, 2026.

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