Hypertonicity vs spasticity: Difference between revisions
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== Hypertonicity or spastic dystonia == | == Hypertonicity or spastic dystonia == | ||
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 <ref>Clinical evaluation and management of spasticity, Jeffery et. al.2002</ref> | |||
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== Spasticity == | == Spasticity == | ||
*spasticity is a velocity dependent increase in muscle tone in regarding to passive movement | |||
*pyramidal tract lesions | |||
pyramidal tract lesions | *pyramidal tract injury doesn't give raise to spasticity the main symptoms are weakness and loss of dexterity which is greater in distal than in the proximal muscles | ||
*pyramidal tract is the system which balance the muscle tone. | |||
=== neural component of spasticity: === | === neural component of spasticity: === | ||
#Dorsoreticulospinal tract (DRT) : Has inhibitory effect on MRT &VST | |||
#medial reticulospinal tract (MRT) & | |||
#vestibulospinal tract ( VST ):<br>- they have facilitatory effect on the extensor tone<br>- all the three systems are though to inhibit flexor reflex afferents responsible for flexor spasm | |||
-they have facilitatory effect on the extensor tone | |||
- all the three systems are though to inhibit flexor reflex afferents responsible for flexor spasm | |||
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Revision as of 12:30, 20 March 2014
Original Editors - Saeed Dokhnan
Top Contributors - Saeed Dokhnan, Laura Ritchie, Lucinda hampton, Admin, Evan Thomas, Scott Buxton, Kate Sampson, Kim Jackson and Aya Alhindi
Hypertonicity or spastic dystonia[edit | edit source]
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 [1]
[edit | edit source]
Spasticity[edit | edit source]
- spasticity is a velocity dependent increase in muscle tone in regarding to passive movement
- pyramidal tract lesions
- pyramidal tract injury doesn't give raise to spasticity the main symptoms are weakness and loss of dexterity which is greater in distal than in the proximal muscles
- pyramidal tract is the system which balance the muscle tone.
neural component of spasticity: [edit | edit source]
- Dorsoreticulospinal tract (DRT) : Has inhibitory effect on MRT &VST
- medial reticulospinal tract (MRT) &
- vestibulospinal tract ( VST ):
- they have facilitatory effect on the extensor tone
- all the three systems are though to inhibit flexor reflex afferents responsible for flexor spasm
References[edit | edit source]
- ↑ Clinical evaluation and management of spasticity, Jeffery et. al.2002
