scholarly journals Bridging veins and veins of the brainstem in microvascular decompression surgery for trigeminal neuralgia and hemifacial spasm

2018 ◽  
Vol 45 (1) ◽  
pp. E2 ◽  
Author(s):  
Hiroki Toda ◽  
Koichi Iwasaki ◽  
Naoya Yoshimoto ◽  
Yoshihito Miki ◽  
Hirokuni Hashikata ◽  
...  
Keyword(s):  
Trigeminal Neuralgia ◽  
Hemifacial Spasm ◽  
Microvascular Decompression ◽  
Decompression Surgery ◽  
Vascular Compression ◽  
Petrosal Vein ◽  
Venous Compression ◽  
Bridging Veins ◽  
Superior Petrosal Vein ◽  
Microvascular Decompression Surgery

OBJECTIVEIn microvascular decompression surgery for trigeminal neuralgia and hemifacial spasm, the bridging veins are dissected to provide the surgical corridors, and the veins of the brainstem may be mobilized in cases of venous compression. Strategy and technique in dissecting these veins may affect the surgical outcome. The authors investigated solutions for minimizing venous complications and reviewed the outcome for venous decompression.METHODSThe authors retrospectively reviewed their surgical series of microvascular decompression for trigeminal neuralgia and hemifacial spasm in patients treated between 2005 and 2017. Surgical strategies included preservation of the superior petrosal vein and its tributaries, thorough dissection of the arachnoid sleeve that enveloped these veins, cutting of the inferior petrosal vein over the lower cranial nerves, and mobilization or cutting of the veins of the brainstem that compressed the nerve roots. The authors summarized the patient characteristics, operative findings, and postoperative outcomes according to the vascular compression types as follows: artery alone, artery and vein, and vein alone. They analyzed the data using chi-square and 1-way ANOVA tests.RESULTSThe cohort was composed of 121 patients with trigeminal neuralgia and 205 patients with hemifacial spasm. The superior petrosal vein and its tributaries were preserved with no serious complications in all patients with trigeminal neuralgia. Venous compression alone and arterial and venous compressions were observed in 4% and 22%, respectively, of the patients with trigeminal neuralgia, and in 1% and 2%, respectively, of those with hemifacial spasm (p < 0.0001). In patients with trigeminal neuralgia, 35% of those with artery and venous compressions and 80% of those with venous compression alone had atypical neuralgia (p = 0.015). The surgical cure and recurrence rates of trigeminal neuralgias with venous compression were 60% and 20%, respectively, and with arterial and venous compressions the rates were 92% and 12%, respectively (p < 0.0001, p = 0.04). In patients with hemifacial spasm who had arterial and venous compressions, their recurrence rate was 60%, and that was significantly higher compared to other compression types (p = 0.0008).CONCLUSIONSDissection of the arachnoid sleeve that envelops the superior petrosal vein may help to reduce venous complications in surgery for trigeminal neuralgia. Venous compression may correlate with worse prognosis even with thorough decompression, in both trigeminal neuralgia and hemifacial spasm.

219 A Clinical Analysis on Microvascular Decompression Surgery for Treatment of Hemifacial Spasm: 2500 Cases Review in a Single Institute

Neurosurgery ◽  
2017 ◽  
Vol 64 (CN_suppl_1) ◽  
pp. 259-260
Author(s):  
Myeongki Yeo ◽  
Bong Jin Park ◽  
Hridayesh Pratap Malla ◽  
Bong Arm Rhee ◽  
Young Jin Lim
Keyword(s):  
Hemifacial Spasm ◽  
Microvascular Decompression ◽  
Clinical Analysis ◽  
Postoperative Outcomes ◽  
Cerebrospinal Fluid Leakage ◽  
Subdural Hemorrhage ◽  
Decompression Surgery ◽  
Vascular Compression ◽  
Root Exit Zone ◽  
Microvascular Decompression Surgery

Abstract INTRODUCTION Hemifacial spasm (HFS) is caused by vascular compression of the facial nerve at its root exit zone from the brainstem. Microvascular decompression (MVD) is the only treatment option that offers the prospect of a definitive cure for HFS. However, this surgery can be risky and the postoperative outcomes might not be good enough sometimes. In order to refine that, we investigated our result of MVDs. METHODS Among 2500 consecutive cases of MVDs have been performed in our institute between January 2000 and December 2015, 2196 patients were enrolled in the current study. They were retrospectively analyzed with emphasis on postoperative outcomes and complications. RESULTS >Postoperatively, the spasm complete cease occurred immediately in 73.4%. The symptoms improved at some degree in 22.7%. The spasm not improved at all in 3.9%. However, the symptom free rate was 88.3% at 6 months after surgery. Eventually, the successful rate was increased by 93.1% at 1 year after MVD. Major complications included permanent hearing disturbance (1.13%), permanent facial palsy (0.4%), vertebral artery injury (0.2%), subdural hemorrhage (0.2%), and epidural hemorrhage (0.1%). Minor complications included transient cerebrospinal fluid leakage (1.3%), infection (0.6%). CONCLUSION MVD is a safe and effective treatment for HFS. A precise recognition of the neurovascular conflict site lead to a successful MVD.

Use of fenestrated aneurysm clips in microvascular decompression surgery

2007 ◽  
Vol 106 (5) ◽  
pp. 929-931 ◽  
Author(s):  
Najmedden Attabib ◽  
Anthony M. Kaufmann
Keyword(s):  
Trigeminal Neuralgia ◽  
Hemifacial Spasm ◽  
Microvascular Decompression ◽  
Decompression Surgery ◽  
Consecutive Series ◽  
Aneurysm Clip ◽  
Microvascular Decompression Surgery ◽  
Standard Techniques ◽  
Complex Cases

✓The standard techniques of microvascular decompression (MVD) surgery in which implant materials such as shredded Teflon felt are used may be inadequate in some complex cases. The authors evaluated the use of fenestrated aneurysm clips to maintain transposition of culprit vessels in patients with trigeminal neuralgia (TN) and hemifacial spasm (HFS). The authors conducted a retrospective review of MVD operations in which the culprit vessel was transposed and then maintained in position with a fenestrated aneurysm clip secured in position by suturing it to the dura mater. Among a consecutive series of more than 450 MVD surgeries, the fenestrated aneurysm clip sling was used in eight of the last 100 cases: six for HFS and two for TN. The follow-up period ranged from 1 to 13 months, and complete symptom resolution was noted in seven of the eight patients. No patient exhibited evidence of any surgical complications. This approach can be safely performed in complicated MVD cases such as reoperations and transpositions of long ectatic arteries. To the best of the authors' knowledge this is the first report in which the use of fenestrated aneurysm clips in MVD surgery is described.

Parapontine trigeminal cryptic angiomas presenting as trigeminal neuralgia

1989 ◽  
Vol 71 (3) ◽  
pp. 368-374 ◽  
Author(s):  
Shin-ichi Tsubaki ◽  
Takanori Fukushima ◽  
Teruaki Tamagawa ◽  
Shin-ichiro Miyazaki ◽  
Kazuo Watanabe ◽  
...  
Keyword(s):  
Differential Diagnosis ◽  
Trigeminal Neuralgia ◽  
Microvascular Decompression ◽  
Facial Pain ◽  
Decompression Surgery ◽  
Vascular Compression ◽  
Content Type ◽  
Microvascular Decompression Surgery ◽  
Age And Sex ◽  
Fine Print

✓ Posterior fossa microvascular decompression surgery was attempted in 1257 patients with trigeminal neuralgia (TN), of whom seven had a very unusual cryptic angioma. The lesions were not visualized on preoperative enhanced computerized tomography scans, and serial angiography demonstrated a small vascular stain in only one case. The character of the facial pain was indistinguishable from TN caused by vascular compression and there was no other specific symptomatology. The patients' age and sex distributions were also compatible with classical TN. Cryptic angiomas presenting as typical TN without other symptoms have not been reported before, but they should be kept in mind in the differential diagnosis and surgical management of TN.

Comparison of Clinical Symptoms and Magnetic Resonance Angiographic (MRA) Results in Patients with Trigeminal Neuralgia and Persistent Idiopathic Facial Pain. Medium-Term Outcome after Microvascular Decompression of Cases with Positive MRA Findings

Cephalalgia ◽  
2006 ◽  
Vol 26 (3) ◽  
pp. 266-276 ◽  
Author(s):  
A Kuncz ◽  
E Vörös ◽  
P Barzó ◽  
J Tajti ◽  
P Milassin ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Trigeminal Neuralgia ◽  
Microvascular Decompression ◽  
Facial Pain ◽  
Clinical Symptoms ◽  
Vascular Compression ◽  
Term Outcome ◽  
Persistent Idiopathic Facial Pain ◽  
Venous Compression ◽  
Imaging Results

To evaluate whether NC could be demonstrated preoperatively, high-resolution magnetic resonance angiography (MRA) was performed in 287 consecutive patients with TN and persistent idiopathic facial pain (PIFP) on a 0.5-T and a 1-T MR unit. Depending on the clinical symptoms, the TN cases were divided into typical TN and trigeminal neuralgia with non-neuralgic interparoxysmal pain (TNWIP) groups. Microvascular decompression (MVD) was performed in 103 of the MRA-positive cases. The patients were followed up postoperatively for from 1 to 10 years. The clinical symptoms were compared with the imaging results. The value of MRA was assessed on the basis of the clinical symptoms and surgical findings. The outcome of MVD was graded as excellent, good or poor. The clinical symptoms were compared with the type of vascular compression and the outcome of MVD. The MRA image was positive in 161 (56%) of the 287 cases. There were significant differences between the clinical groups: 66.5% of the typical TN group, 47.5% of the TNWIP group and 3.4% of the PIFP group were positive. The quality of the MR unit significantly determined the ratio of positive/negative MRA results. The surgical findings corresponded with the MRA images. Six patients from the MRA-negative group were operated on for selective rhizotomy and no NC was found. Venous compression of the trigeminal nerve was observed in a significantly higher proportion in the background of TNWIP than in that of typical TN on MRA imaging (24.1% and 0.8%, respectively) and also during MVD (31.2% and 1.2%, respectively). Four years following the MVD, 69% of the patients gave an excellent, 23% a good and 8% a poor result. The rate of some kind of recurrence of pain was 20% in the typical TN and 44% in TNWIP group. The rate of recurrence was 57% when pure venous compression was present. The only patient who was operated on from the PIFP group did not react to the MVD. The clinical symptoms and preoperative MRA performed by at least a 1-T MR unit furnish considerable information, which can play a role in the planning of the treatment of TN.

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