clonus
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| clonus [2026/09/02 03:45] – [Aetiology of pathologic clonus] wh | clonus [2026/09/04 03:06] (current) – [bilateral] gary1 | ||
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| *[[leukoencephalopathy]] - acute, rapidly progressive, | *[[leukoencephalopathy]] - acute, rapidly progressive, | ||
| *[[bulbar_palsy|pseudobulbar palsy]] - involves muscles innervated by the cranial nerves IX, X and XII, may have labile emotions and bilateral upper motor limb signs | *[[bulbar_palsy|pseudobulbar palsy]] - involves muscles innervated by the cranial nerves IX, X and XII, may have labile emotions and bilateral upper motor limb signs | ||
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| + | ***decorticate posturing** | ||
| + | * occurs due to severe cerebral cortical dysfunction | ||
| + | * results in arms are bent inward at the elbows and held tightly against the chest with wrists and fists clenched, while the legs are stiffly extended and rotated inward | ||
| + | ***decerebrate posturing** | ||
| + | * occurs due to severe brainstem dysfunction below the red nucleus | ||
| + | * results in all four limbs are rigidly straightened and extended out, with the arms pronated (palms facing away), toes pointed downward, and the head and neck arched backward | ||
| ====unilateral==== | ====unilateral==== | ||
clonus.txt · Last modified: 2026/09/04 03:06 by gary1