Operative Complications of Microvascular Decompression for Hemifacial Spasm: Experience of 1548 Cases.

Abstract

Although microvascular decompression (MVD) surgery is considered the gold standard treatment for hemifacial spasm, there are some MVD-related complications. We retrospectively reviewed 1548 patients with hemifacial spasm who underwent retromastoid suboccipital craniectomy with MVD from January 2009 to June 2013. All patients were followed for >2 years. Excellent and good results were 92.5% and 4.2%, respectively. Postoperative complications were recorded in 16.09% (n= 249). There was no MVD-related mortality. After MVD surgery, the most frequent complications were occipital sensory disturbance (7.3%), facial nerve palsy (9.7%), and hearing impairment (3.5%). Other complications were as follows: cerebrospinal fluid leakage (n= 24), poor healing wound (n= 14), lower cranial nerve palsy (n=12), wound infection (n= 4), and hemorrhage (n= 2). MVD operation is a safe treatment for hemifacial spasm. Facial nerve palsy is the most common MVD-related complication; preservation of the lesser occipital nerve during MVD surgery can decrease the rate of occipital sensory disturbance. Permanent or serious complications are comparatively rare in MVD surgery.