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| decortication - www.healthnote25.com |
Decortication is
a state or disorder of the limb marked by muscle stiffness on one or both sides
of the limb ie the lower member is in a rigid position and the extension, while
the upper limb in a rigid and flexed position this position is difficult to
change.
Disorders are usually
present in the brain stem or in the cerebrum. The term rigidity of
decortication and deserebrasi or posturing is used to express stereotyped arm
movements and limbs and occurs spontaneously or triggered by sensory
stimulation in such patients.
Flexion of elbow joints and
wrists and arm supination (dkortikasi) shows severe bilateral damage to the
cerebral hemispheres over mesensefalon, whereas elbow joint and wrist extension
and arm pronation (descrebrasi) show damage to the mesensefalon as well as the
caudal section of the diencephalon.
The extension of the arm
with minimal tribal flesi or both flasid treads (limp) is associated with
lesions in the lower pons. However, acute lesions often lead to extension of
the limbs irrespective of their location, and almost all posturing properties
of the extensor turn into flesor so that posturing alone is unreliable to
determine an accurate anatomic location.
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