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Medicine

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Neurology

Question
6 out of 12
 

Anterior spinal Artery thrombosis is characterized by all, except: (PGI MAY 2009)



A Loss of pain & touch

B Loss of vibration sense

C Loss of power in lower limb

D Sphincter dysfunction

Ans. B

Loss of vibration sense

Anterior spinal Artery Thrombosis/Syndrome

1). Anterior Spinal Artery is a single artery that supplies the anterior two thirds of the spinal cord.

2). Sparing of posterior column

Posterior 1/3” of the cord is supplied by the posterior spinal artery and hence the posterior column is spared and vibration & joint position sense are preserved

3). Pain at site of infarction

Moderate to severe back pain at the site of cord infarction, most often in the thoracic region.

4). Infarction of the corticospinal tract

Paraplegia with UMN signs (Spasticity and hyper-reflexa)

Note: That initially flaccidity and hyporeflexia may be seen in patients of spinal shock

5). Infarction of the anterolateral tracts (spinothalamic tract)

Loss of pain and temperature sensation distal to the lesion

6). Infarction of the fibres required for sphincter control (carried in anterior 2/3rd of cord)

Loss of bladder control

Neurology Flashcard List

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