Study on Direction of Facial Nerve Puncture Through Wangu(GB12)Acupoint Under CT
Objective:To explore the feasibility and safety of facial nerve puncture through Wangu(GB12)acupoint by using multi-planar reconstruction of CT images to simulate the puncture path to the pupil direction,taking stylomastoid foramina as the reference object.Methods:24 cases with CT scans that included the base of the skull were selected as the observation samples.After performing multi-planar reconstruction,a puncture path was designed,and the number of simulated puncture lines that successfully penetrated the stylomastoid foramina near the stylomastoid suture was counted,and the perpendicular distance to the stylomastoid foramina was measured.The distance relationship between the stylomastoid foramina and the surrounding anatomical structures was observed.Results:A total of 48 puncture paths were obtained on the cross section of 24 observed samples.No bone structure was found in the simulated puncture lines,and the puncture success rate was 100%.The spatial linear distance between the simulated puncture line and the outer orifice of the stylomastoid foramina was calculated,the shortest was 1.55 mm,the longest was 10.35 mm,and the average was(5.03±1.93)mm.There was no statistical difference between the left and right linear distance(P>0.05),and there was no statistical difference between the male and female linear distance(P>0.05).None of the simulated puncture routes passed through the jugular foramen or the external orifice of the carotid artery.Conclusion:It is safe and feasible to puncture facial nerve through Wangu(GB12)acupoint to the pupil direction.