[Experimental model study on Li's repositioning maneuver for horizontal semicircular canal benign paroxysmal positional vertigo].

Objective:Based on the standard spatial semicircular canal model, the scientificity and feasibility of Li's repositioning maneuver for horizontal semicircular canal benign paroxysmal positional vertigo were analyzed.Method:The standard space semicircular canal model was established. The significance and shortcomings of each step were analyzed by simulating and observing the Li's repositioning maneuver for horizontal semicircular canal benign paroxysmal positional vertigo.Result:According to the model of semicircular canal, the otoliths of horizontal semicircular canal are more likely to return to the ampulla instead of moving into the utriculus through the semicircular canal after using Li's repositioning maneuver.Conclusion:The experimental model suggests that Li's repositioning maneuver omits the necessary steps of repositioning method, and can not simulate the result of the reposition of otoliths.