Abstract:The Microvascular Decompression (MVD) of the recurrent trigeminal neuralgia treated with the Gasserian ganglion Radiofrequency Therapy (RT) is studied in this paper. 11 recurrent cases from 152 MVD operations of trigeminal neuralgia from Oct. 2004 to Dec. 2007 are analyzed. Among the 11 cases, there are 5 Partial Rhizotomy (PR) of trigeminal sensory root, 4 MVD plus PR, 1 MVD and 1 cholesteatoma ectomy plus PR. Under microscope, the circumference of trigeminal root is changed compared with the normal. The in-hospital effective rate is 100%, and the long-term cure rate is 80%. The results show that the recurrence of radiofrequency therapy seems to be related to the first treatment time, the target and extent of radiofrequency damage. The MVD of trigeminal neuralgia is still an effective treatment to recurrent cases of radiofrequency therapy, but the changed anatomy needs more attention of PR.