Experience of microvascular decompression for hemifacial spasm 92 cases

Objective To investigate surgical effect and complication of microvascular decompression( MVD) on hemifacial spasm( HFS). Methods A retrospective analysis was conducted for 92 patients with HFS enrolled in our hospital from Feb. 2006 to Jun. 2011 accepted with MVD. Results After a follow- up of 6 months to 7 years,77 patients were cured for HFS,7 patients were alleviated,6 patients were partly alleviated 2 patients were invalided and no recurrence,suggesting a total efficiency of 97. 7%. Conclusion MVD operation is the most available treatment to HFS. Skilled microsurgical technique along with the local anatomy knowledge of cerebellopontine angle,good exposure of root exit zoon( REZ),correct recongnition of offending vascular,the appropriate size and proper positioning of Teflon grafts are important factors to assure high efficacious and reduce complications in microvascular decompression.