单词	tractotomy
释义	tractotomy /trakˈtɒtəmi / noun [mass noun] The surgical severing of nerve tracts especially in the medulla of the brain, typically to relieve intractable pain or mental illness, or in research: surgical tractotomy on the human spinal cord [count noun]: a tractotomy was performed... They noted that facial pain and itch sensations are both abolished by trigeminal medullary tractotomy. A study of cognitive function in 23 patients undergoing subcaudate tractotomy found significant impairment of cognitive function 2 weeks post-op which had largely resolved after six months. It seems that the complications associated with pulmonary tractotomies are considerably high, but the mortality of anatomic resections is prohibitive.
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