Hypertonicity vs spasticity: Difference between revisions
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1-hypertonicity or spastic dystonia is a continues increase in the muscle tension without regarding to the movement and is dependent upon afferent information from feedback following movements of stretch , decorticat and decerbrate rigidity are a form of spastic dystonia, spastic dystonia is considered to be a form of sustained efferent muscular hyperactivity , dependent on continues supraspinal derive to the alpha motor neuron | Clinical evaluation and management of spasticity, Jeffery et. al.2002<references />1-hypertonicity or spastic dystonia is a continues increase in the muscle tension without regarding to the movement and is dependent upon afferent information from feedback following movements of stretch , decorticat and decerbrate rigidity are a form of spastic dystonia, spastic dystonia is considered to be a form of sustained efferent muscular hyperactivity , dependent on continues supraspinal derive to the alpha motor neuron | ||
2- spasticity is a velocity dependent increase in muscle tone in regarding to passive movement, | 2- spasticity is a velocity dependent increase in muscle tone in regarding to passive movement, | ||
-neural component of spasticity: pyramidal tract lesion , pyramidal tract injury doesn't give raise to spasticity (BURKE), | -neural component of spasticity: pyramidal tract lesion , pyramidal tract injury doesn't give raise to spasticity (BURKE), | ||
the main symptoms are weakness and loss of dexterity which is greater in distal than in yhe proximal muscles, | the main symptoms are weakness and loss of dexterity which is greater in distal than in yhe proximal muscles, | ||
- pyramidal tract is the system which balance the muscle tone.-the key tracts are : | - pyramidal tract is the system which balance the muscle tone.-the key tracts are : | ||
1-DRT : Has inhibitory effect on MRT &VST | 1-DRT : Has inhibitory effect on MRT &VST | ||
2-MRT & 3- VST : they have facilitatory effect on the extensor tone, | 2-MRT & 3- VST : they have facilitatory effect on the extensor tone, | ||
- all the three systems are though to inhibit flexor reflex afferents responsible for flexor spasm. (BROWN 1994) | - all the three systems are though to inhibit flexor reflex afferents responsible for flexor spasm. (BROWN 1994) | ||
Revision as of 17:22, 12 March 2014
Clinical evaluation and management of spasticity, Jeffery et. al.20021-hypertonicity or spastic dystonia is a continues increase in the muscle tension without regarding to the movement and is dependent upon afferent information from feedback following movements of stretch , decorticat and decerbrate rigidity are a form of spastic dystonia, spastic dystonia is considered to be a form of sustained efferent muscular hyperactivity , dependent on continues supraspinal derive to the alpha motor neuron
2- spasticity is a velocity dependent increase in muscle tone in regarding to passive movement,
-neural component of spasticity: pyramidal tract lesion , pyramidal tract injury doesn't give raise to spasticity (BURKE),
the main symptoms are weakness and loss of dexterity which is greater in distal than in yhe proximal muscles,
- pyramidal tract is the system which balance the muscle tone.-the key tracts are :
1-DRT : Has inhibitory effect on MRT &VST
2-MRT & 3- VST : they have facilitatory effect on the extensor tone,
- all the three systems are though to inhibit flexor reflex afferents responsible for flexor spasm. (BROWN 1994)
