对15例病期持续一年以上的良性发作性位置性眩晕(BPPV)病人施行后半规管开窗和闭塞术(FOP);其中男性5例,女性10例,年龄31～64岁,平均49.5岁;全部均患有与头运动有关的位置性眩晕;病期1～10年,平均5.5年。听力正常有10例,感音神经性聋2例,老年聋、混合聋及传导聋各1例。手术进路取耳后切口,钻开乳突,先找到水平半规管,在 Fifteen patients with benign paroxysmal positional vertigo (BPPV) with a disease duration of more than one year were performed with semicircular canal fenestration and occlusion (FOP). There were 5 males and 10 females, ranging in age from 31 to 64 years with an average of 49.5 years ; All had headaches related to positional vertigo; duration of 1 to 10 years, an average of 5.5 years. Normal hearing in 10 cases, 2 cases of sensorineural deafness, senile deafness, mixed hearing loss and hearing loss in 1 case. Surgical approach to take the ear after the incision, drilled mastoid, first to find the level of semicircular canal, at