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Diseases » Brown-Sequard Syndrome » Wikipedia
 

Brown-Sequard Syndrome in Wikipedia

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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Brown-Sequard syndrome". (Source - Retrieved 2006-09-07 14:11:11 from http://en.wikipedia.org/wiki/Brown-Sequard_syndrome)

Introduction

Brown-Séquard syndrome, also known as Brown-Séquard's hemiplegia and Brown-Séquard's paralysis, is a loss of motricity (paralysis and ataxia) and sensation caused by the lateral hemisection of the spinal cord. Other synonyms are crossed hemiplegia, hemiparaplegic syndrome, hemiplegia et hemiparaplegia spinalis and spinal hemiparaplegia.

The hemisection of the cord results in a lesion of each of the three main neural systems; the principal upper motor neuron pathway of the corticospinal tract, one or both dorsal columns and in the spinothalamic tract. as a result of the injury to these three main brain pathways the patient will present with three lesions corticospinal lesion produces spastic paralysis on same side of the body(the loss of moderation by the umn) lesion to fasciculus gracilis or fasciculus cuneus results in ipsilateral loss of vibration and proprioception (position sense).the loss of spinothalamic tract leads to pain and temperature sensation being lost from the opposite side( starts one or two segment below the lesion) . but at the lesion site all sensory modalities are lost on the same side. and also an ipsilateral flaccid paralysis.

It was first described in 1850 by the British neurologist Charles Édouard Brown-Sequard (1817-1896), who studied the anatomy and physiology of the spinal cord.

One cause of Brown-Sequard Syndrome is from a GSW (Gun Shot Wound).

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Reference

  • C.-E. Brown-Séquard: De la transmission croisée des impressions sensitives par la moelle épinière. Comptes rendus de la Société de biologie, (1850)1851, 2: 33-44.

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