Comparison The Effect Of CT Guided Puncturing Through Inside And Outside Foramen Rotundum For Radiofrequency Thermocoagulation To Treat Primary Trigeminal Maxillary Neuralgia

Objectives:To compare the clinical effects of CT guided puncturing to treat primary trigeminal maxillary neuralgia for radio-frequency thermocoagulation through inside and outside foramen rotundum.Methods:According to the principle of completely random digital table,48 patients suffered from maxillary neuralgia were divided into 2 groups(n=24):Group inside foramen rotundum and Group outside foramen rotundum.Group inside foramen rotundum received CT guided puncturing through inside foramen rotundum for radiofrequency thermocoagulation of maxillarynerve.Group outside foramen rotundum received CT guided puncturing through outside foramen rotundum for radiofrequency thermocoagulation.The parameters were pulse temperature of 95 ℃ and pulse time of 120 s repeat 2-3 times.The CPT before and after operation were observed.Evaluated at 1d、30d.1y and 2y after operation if NRS<1.and recorded facial hematoma,comeal ulcer,injured other nerve and cerebrovascular accident during 30d after operation.Results:There was no significant difference in age,sex,preoperative NRS score and puncture time between the two groups(P>0.05).Compared with the preoperative 1 day,the CPT of the affected side increased at different frequencies at 1 day after operation in both groups.There was no significant difference in the effective rate of radiofrequency therapy between the two groups at 1 day,30 days and 1 year after operation(P>0.05).The effective rate of intraforaminal group was better than that of external foraminal group at 2 years after operation(P<0.05).There were 5 cases of facial hematoma in the intraforamen rotundum group and 6 cases of facial hematoma in the external foramen rotundum group.There was no significant difference between the two groups(P>0.05).There were no adverse reactions such as corneal ulcer,injury of non-painful branches and cardiovascular and cerebrovascular accidents in both groups.Conclusion:The long-term curative effects of CT guided puncturing through inside foramen rotundum for radio-frequency thermocoagulation to treat primary trigeminal maxillary neuralgia was better than outside foramen rotundum.