The purpose of this report is to present the results of clinical observations upon 21 surgical cases with tic douloureux (female 13, male 8) wring the period from January, 1960 to August, 1972 at the Department of Neurosurgery, Seoul ational University Hospital, Seoul, Korea.
The average age at onset was 48year of age ranging from 22 to 66 years. The average duration from onset to operation was 5 years. T1 a frequency of involvement was the highest in, the maxillary division, next was maxillary and mandibular division, and none in the ophthalmic division. Whole division was involved in one case.Right sided involvement predominated by a ratio of 2 to 1 and bilateral involvement was found in on y one case.
Extraction of innocent teeth, ungraying operation upon paranasal sinus had been carried out in 11 cases as consequence of misdiagnosis. Alcohol injection of peripheral, branches of trigeminal nerve and medical treatment produced short-lived or non-effectiveness.
Trauma to ipsilateral mandible d epidermoid cyst at cerebellopontine apgle seemed to be the cause of tic douloureux in 2 cases, respectively.
Major complications observed in ´Frazier´s method group, were paresthesia, facial nerve palsy, partial paralysis of motor root, and recurrence of. neuralgia., All, of the peripheral nerve avulsion: group developed recurrence of pain within three years. Mild decrease of corneal reflex was noted in two cases of Dandy´s method group.
Posterior fossa operation stands in superiority, when it is considered that some pathologic lesions are frequently found in the posterior fossa; that motor root is less frequently injured, and that the light touch, is so fairly preserved in all three divisions that the least damage to the cornea is expected.
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