Case: Hemisection of The Spinal Cord

Mr. Y, a 40-year-old male, sustained spinal cord injury resulting in Brown-Séquard syndrome after a traffic accident, exhibiting right-side paralysis and loss of pain sensation on the left side. Examination revealed negative reflexes on the right side and symptoms of Horner's syndrome in the left eye, suggesting a lesion at or below the C3 spinal cord segment on the right. The injury affected both sensory and motor pathways, indicating involvement of lower motor neurons and upper motor neuron pathways leading to paralysis and altered reflexes.