Schiff-Sherrington Syndrome

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11 Terms

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Etiology

Severe injury between T3/L3

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#1 cause

Fractures

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Signs

-increased extensor tone of forelimbs
-paralysis of hindlimbs
-anesthesia caudal to lesion

<p>-increased extensor tone of forelimbs<br>-paralysis of hindlimbs<br>-anesthesia caudal to lesion</p>
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Confusing LMN signs first few hours

-result from spinal shock
-decreased reflexes
-decreased tone
-looks like LMN injury BUT IT IS NOT!!!

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Recovery from spinal shock = return of reflexes

-myotactic first
-withdrawls next
-hypotonia (10-14 days)

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Recovery over several weeks

-signs become consistent with UMN injury
-hypertonia/hyperreflexia
-guarded prognosis

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Border neurons

Neurons in L1-L5 spinal cord segments that coordinate fore- and hindlimb activity

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Normal effect of border neurons

Predominately inhibitory

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Explain the role of border neurons in schiff-sherrington

IDK?????

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Decerebellate rigidity

-lesions rostral to cerebellum
-loss of cerebellar inhibition of tone in forelimbs
-increased externsor tone in forelimbs
-opisthotonus

<p>-lesions rostral to cerebellum<br>-loss of cerebellar inhibition of tone in forelimbs<br>-increased externsor tone in forelimbs<br>-opisthotonus</p>
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Decrebrate rigidity

-transection of midbrain
-loss of descending inhibition
-increased extensor tone throughout body
-opisthotonus

<p>-transection of midbrain<br>-loss of descending inhibition<br>-increased extensor tone throughout body<br>-opisthotonus</p>