The main sequelae of semicircular canal tamponade are hearing loss, facial paralysis, and cerebrospinal fluid fistula. The semicircular canals are an integral part of the inner ear and their primary function is related to maintaining posture and balance. Canal tamponade is a common procedure used to treat benign paroxysmal positional vertigo. It is usually performed under general anesthesia, in which the canals are incised and tamponaded with specialized medical materials, which can provide certain therapeutic effects. However, this procedure may cause damage and scarring to the ear canal, and the facial nerves may be accidentally injured in the course of the surgery, so hearing loss, facial paralysis, and cerebrospinal fluid fistulae are some of the after-effects that may occur. Generally speaking, if you go to a regular hospital and strictly follow the surgical procedure for semicircular canal tamponade, the probability of sequelae is low. It is recommended that treatment be under the supervision of a physician, who will evaluate the feasibility of this surgical procedure if necessary.