{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T05:22:58Z","timestamp":1747200178147,"version":"3.40.5"},"reference-count":21,"publisher":"Media Sphere Publishing House","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Burdenko's Journal of Neurosurgery"],"published-print":{"date-parts":[[2024,4,23]]},"abstract":"<jats:p>Preserving the function of the facial nerve is extremely important in surgery for vestibular schwannomas. Two methods of arachnoid dissection are described for resection of vestibular schwannoma via retrosigmoid approach (from the brain stem and internal auditory canal). Objective. To evaluate the results of arachnoid dissection of the facial nerve from internal auditory canal when resecting the vestibular schwannoma. Material and methods. We analyzed 61 patients with vestibular schwannomas. Patients were divided into 2 groups depending on surgical technique. We estimated facial nerve function before and after surgery, preoperative dimension of vestibular schwannoma and extent of resection. The influence of various factors on extent of resection and postoperative facial nerve function was studied. Results. Vestibular schwannoma resection from the brain stem was performed in 30 patients, arachnoid dissection \u2014 in 31 patients. There was no significant between-group difference. Gross total resection was performed in 78.7% of cases. Both techniques demonstrated similar results regarding extent of resection. Arachnoid dissection showed the advantage regarding facial nerve function immediately after surgery (p=0.012) and 6 months later (p&lt;0.001). Normal facial nerve function in 6 months after arachnoid dissection was observed in 80.7% of patients. Preoperative dimension of tumor influenced facial nerve function in addition to technique of resection (p=0.001). Conclusion. We identified the factors influencing facial nerve function after resection of vestibular schwannoma. Surgical technique was the most significant factor. 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