RESUMO
Objective To investigate the clinical effect of precise percutaneous radiofrequency ablation of semilunar ganglion through fo -ramen ovale under the three-dimensional CT for the treatment of trigeminal neuralgia .Methods A total of 80 patients with primary trigeminal neuralgia in our hospital from August 2013 to December 2015 were selected,and they were randomly divided into two groups with 40 cases in each group .The control group was implemented blind detective radiofrequency ablation ,while the observation group was carried out under the three-dimensional CT positioning radiofrequency ablation .All the patients were followed up for 3 months after treatment .Compared the overall clinical results , and recorded the time of targeting the trigeminal nerve and the complications within 1 week after treatment between the two groups.The pain condition at different time points (before treatment,1 week and 3 months after treatment) between the two groups were com-pared.Results The positioning time of observation group was shorter than that of the control group ,the difference was significant (P<0.05). The VAS score of the observation group 1 week and 3 months after surgery was lower than the control group ,the difference was significant (P<0.05).The ratio of masticatory muscle weakness ,hypoacusis,facial swelling and congestion and corneal anesthesia of the observation group within 1 week postoperatively were lower than those of the control group ,the difference was significant (P<0.05).The effective rate of the observation group was higher than that of the control group ,the difference was significant (P<0.05).Conclusion Percutaneous radiofre-quency ablation of semilunar ganglion through foramen ovale under the three -dimensional CT for the treatment of trigeminal neuralgia has the advantages of more accurate positioning of the foramen ovale ,shorter operation time , and less complications ,which can relieve the pain of pa-tients and improve the overall clinical effect .