Аннотация:Abstract. Rationale: Modern literature contains a large number of works assessing the effectiveness of surgical treatment ofhemifacial spasm (HFS). However, only a few present an analysis of results with a follow-up period of more than 6 months. Thisstudy demonstrates the results of patient follow-up for 12 months or more.ВЕСТНИК НЕВРОЛОГИИ, ПСИХИАТРИИ И НЕЙРОХИРУРГИИ №11/2023 975Purpose of the study: Identification of possible patterns of outcomes of HFS surgical treatment during a follow-up period of 12months or more.Methods: The study included 84 patients who underwent vascular decompression of the facial nerve between 2018 and 2022.The duration of the history of hemifacial spasm in the presented patients ranged from 1 year to 18 years with an average of 5years and 10 months. In order to assess treatment results, the Sindou et al. scale was used.Results: At discharge, 92.8 % of the patients underwent successful surgery; of these, the majority (73.8 %) were completelyfree of spasticity symptoms, which corresponded to «0» on Sindou scale. Six months after surgical treatment, the distributionof the patients was somewhat different from that in the early postoperative analysis. In contrast to the early assessment ofspasticity, the delayed assessment showed that 67.8 % of the operated patients out of the total number of the patients did nothave clinical signs of hemifacial spasm 6 months after the intervention. 17.9 % had symptoms corresponding to grade I, thatis, rare twitching of the facial muscles, which did not significantly affect the patient’s well-being. 5.9 % of the patients had gradeII clinical condition, and 8.4 % had grade III, when the result was assessed as «unsatisfactory». One year after surgery, we didnot observe significant differences from the data presented after 6 months: 67.1 % still had no symptoms of spasticity, 18.75 %corresponded to grade I, 6.25 % — to grade II, and 7.8 % of the patients presented in the study belonged to grade III.Conclusion: Today, vascular decompression is the most effective method of HFS etiopathogenetic treatment. The data obtainedduring the study show that a result that satisfies both the doctor and the patient is achievable in most cases, and our studyconfirms this. After all, one of the most important aspects of such surgery, performed not as a life-saving operation, but in orderto improve the patient’s quality of life, is the maximum possible reduction in the likelihood of developing complications thatsubsequently affect the lives of such patients.