Type of Surgery
Last updated: 02/17/2009
Newer anti-seizure medications have partially replaced corpus callosotomy. Focal epilepsy is treated with focal surgery such as temporal lobectomy or hemispherectomy. Vagus nerve stimulation is an alternative for some patients.
Corpus callosotomy (or less frequently, callotomy) is a surgical procedure that disconnects the cerebral hemispheres, resulting in a condition called split-brain.
Most modern callosotomies involve only the anterior portion of the corpus callosum, reflecting the fact that the frontal and temporal lobes are the most commonly involved in the genesis of seizures. The deficits from this modified procedure are milder; side-effects have not been found in some patients (although it is very unlikely that none exist).
The corpus callosum is usually severed in order to stop epileptic seizures. Once the corpus callosum is cut, the brain has much more difficulty sending messages between the hemispheres. Although the corpus callosum is the largest white-matter tract connecting the hemispheres, some limited interhemispheric communication is still possible via the anterior commissure and posterior commissure. When tested in particular situations, it is obvious that information transfer between the hemispheres is reduced.
The most common spine procedure is Lumbar Disc laminectomy, with 185,651 performed in 2006. The second highest category is Cranial, with 592,443 procedures performed and the most common Cranial procedure is Supratentorial Craniotomy, with 55,578 performed.
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