The surgical incision for facial dystonia is made in the hairline behind the ear on the affected side, rather than on the face.
Although the clinical manifestation of the disease is on the face, the root of the disease is in the intracranial brainstem where the facial nerve branch emanates from, and this position corresponds to the hairline behind the ear, so the surgical incision is chosen here. This location fully exposes the root of the facial nerve on the one hand, and on the other hand, the hair grows up to cover the surgical incision, and the postoperative scar is inconspicuous and does not affect the aesthetics.
The main steps of microvascular decompression surgery for facial muscle spasm: under general anesthesia, make an incision of about 5cm long behind the ear on the affected side, set aside the soft tissues and make a microbone hole of about 2cm in the skull; observe the anatomical relationship between the facial auditory nerve and the surrounding blood vessels under the microscope, and look for the responsible blood vessels; separate the responsible blood vessels, and put the polymer material similar to cotton between the blood vessels and the nerves in order to fix the purpose of the blood vessels.
In this way the compressed nerve is liberated, and most patients can see good results in a short time after the operation, with occasional sequelae such as hearing loss and facial paralysis.