What is Brown squad syndrome?
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What is Brown squad syndrome?
Brown-Sequard syndrome (BSS) is a rare neurological condition characterized by a lesion in the spinal cord which results in weakness or paralysis (hemiparaplegia) on one side of the body and a loss of sensation (hemianesthesia) on the opposite side.
Is Brown-Séquard syndrome a lower motor neuron lesion?
Brown-Séquard syndrome is a rare neurological syndrome first described by Charles Eduard Brown Séquard in 1850 as ipsilateral upper motor neuron motor weakness below the level of lesion and lower motor neuron type at the level of lesion with loss of ipsilateral proprioception with contralateral loss of pain and …
Which tract is affected in Brown-Séquard syndrome?
Brown-Séquard syndrome is a neurologic syndrome resulting from hemisection of the spinal cord. It manifests with weakness or paralysis and proprioceptive deficits on the side of the body ipsilateral to the lesion and loss of pain and temperature sensation on the contralateral side.
How do you get Brown-Séquard syndrome?
Multiple causes of Brown-Séquard syndrome have been described in the literature. The most common cause remains traumatic injury, often a penetrating mechanism, such as a stab or gunshot wound or a unilateral facet fracture and dislocation due to a motor vehicle accident or fall.
Which spinal tract is for light touch?
anterior spinothalamic tract
The lateral spinothalamic tract (Figure 2) conveys pain and temperature information, whereas the anterior spinothalamic tract carries information about light touch.
Is conus medullaris UMN or LMN?
The symptoms and signs of cauda equina syndrome tend to be mostly lower motor neuron (LMN) in nature, while those of conus medullaris syndrome are a combination of LMN and upper motor neuron (UMN) effects (see Table 1, below).
What is the difference between cauda equina and conus medullaris?
The most distal bulbous part of the spinal cord is called the conus medullaris, and its tapering end continues as the filum terminale. Distal to this end of the spinal cord is a collection of nerve roots, which are horsetail-like in appearance and hence called the cauda equina (Latin for horse’s tail).
What is the cauda equina?
The collection of nerves at the end of the spinal cord is known as the cauda equina, due to its resemblance to a horse’s tail. The spinal cord ends at the upper portion of the lumbar (lower back) spine.
What is the difference between fine touch and crude touch?
Fine touch (or discriminative touch) is a sensory modality that allows a subject to sense and localize touch. The form of touch where localization is not possible is known as crude touch.
What is the difference between dorsal column and spinothalamic tract?
In the anterolateral system, signals ascend the spinal cord via anterior and lateral spinothalamic tracts while in the dorsal column system, signals ascend the spinal cord via the dorsal columns.
Is cauda equina LMN or UMN?
What is grey and white matter?
The tissue called “gray matter” in the brain and spinal cord is also known as substantia grisea, and is made up of cell bodies. “White matter”, or substantia alba, is composed of nerve fibers.
