title: The effectiveness of percutaneous balloon compression in the treatment of trigeminal neuralgia in patients with multiple sclerosis.
abstract: OBJECTIVE
  Trigeminal neuralgia (TN) is more common in multiple sclerosis (MS) patients than in the general population and among the former has an incidence of approximately 2%. The pathophysiology of TN in MS patients is believed to be caused by a demyelinating plaque at the root entry zone, and therefore procedures that cause direct nerve damage are thought to be the most effective surgical modality. The authors aimed to compare the efficacy of percutaneous balloon compression (PBC) in TN patients with and without MS.
  
  
  METHODS
  Retrospectively collected clinical data on 80 consecutive patients who underwent 144 procedures and who received PBC for TN treatment between January 2000 and January 2010 were analyzed. The cohort included 17 MS and 63 non-MS patients.
  
  
  RESULTS
  The mean age at first operation was significantly younger in the MS group compared with the non-MS group (59 years vs 72 years, respectively, p < 0.0001). After a mean follow-up of 43 months (MS group) and 25 months (non-MS group), the symptom recurrence rate following the first operation was higher in the MS group compared with that in the non-MS group (86% vs 47%, respectively, p < 0.01). During long-term follow-up, more than 70% of MS patients required multiple procedures compared with only 44% of non-MS patients. Excellent or satisfactory outcomes were not significantly different between the MS and non-MS cohorts, respectively, at 1 day postoperatively (82% vs 91%, p = 0.35), 3 months postoperatively (65% vs 81%, p = 0.16), and at last follow-up (65% vs 76%, p = 0.34). A similar incidence of postoperative complications was observed in the 2 groups.
  
  
  CONCLUSIONS
  PBC is effective in the treatment of trigeminal neuralgia in patients with MS, but, compared with that in non-MS patients, symptom recurrence is higher and requires multiple procedures.
authors.affiliation: Department of Neurosurgery, Institute of Neurological Science, Glasgow, United Kingdom.
authors.forename: Sean
authors.initials: S
authors.lastname: Martin
authors.affiliation: Department of Neurosurgery, Institute of Neurological Science, Glasgow, United Kingdom.
authors.forename: Mario
authors.initials: M
authors.lastname: Teo
authors.affiliation: Department of Neurosurgery, Institute of Neurological Science, Glasgow, United Kingdom.
authors.forename: Nigel
authors.initials: N
authors.lastname: Suttner
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D002404:Catheterization / Q000295:instrumentation*; D003714:Denervation / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000150:complications*; D012189:Retrospective Studies; D016896:Treatment Outcome; D014277:Trigeminal Neuralgia / Q000209:etiology / Q000601:surgery*
keywords: MS = multiple sclerosis; MVD = microvascular decompression; PBC = percutaneous balloon compression; REZ = root entry zone; TN = trigeminal neuralgia; multiple sclerosis; pain; percutaneous balloon compression; trigeminal neuralgia