"PTFE Sleeve Graft" Technique to Remove Neurovascular Conflict in Micro Vascular Decompression for Trigeminal Neuralgia.

Background: Microvascular decompression (MVD) of the trigeminal nerve is a well-accepted nondestructive procedure for trigeminal neuralgia. Usually, Teflon (PTFE) puff or felt graft techniques, which are most commonly used, are associated with arachnoiditis and recurrence among other complications. We use the "sleeve graft" technique using PTFE to separate the neurovascular conflict and here we describe our experience with the same in 376 cases. Objectives: To study the outcomes in 376 patients treated with sleeve graft technique for trigeminal neuralgia. Materials and Methods: For a period of 18 years, from 2002 to 2020, all cases of medically refractory trigeminal neuralgia were subjected to the "sleeve graft" technique for MVD. Pre- and post-operatively, pain score was given according to Barrow Neurological Institute pain intensity score. Cases were observed for any complications and pain relief in short and long-term follow-up. Results: In total, 376 cases of refractory primary trigeminal neuralgia cases, among which 198 patients underwent MVD with no prior intervention, 158 underwent MVD following percutaneous ablative procedure, 13 were "Revision MVD" previously done at other centers, and four were post gamma knife failure. There was no incidence of arachnoiditis or recurrence of symptoms. Further, 368 (97.8%) patients had complete recovery from symptoms while eight (2.2%) had partial recovery after 5 years of follow-up. Complications included hearing loss (n = 1), temporary hypoesthesia (n = 45), and permanent hypoesthesia (n = 7). Conclusion: "PTFE Sleeve Graft" technique to remove the neurovascular conflict in micro vascular decompression (MVD) for trigeminal neuralgia is a safe and effective technique that yields better results.

Anterior Clival Defect with Primary CSF Rhinorrhea: A Case Report.

Spontaneous (nontraumatic, nonsurgical) cerebrospinal fluid (CSF) rhinorrhea constitute only 3-4% of all cases. Here, we present a case of a 66-year-old male who presented with spontaneous CSF rhinorrhea, where intraoperative findings revealed an anterior clival defect as the cause. Such cases are extremely rare, and to the best of our knowledge only five of such cases are described in the literature. In this report, we discuss the possible etiology and management of this rare condition.