Objective To study the etiology of trigeminal neuralgia(TN)and investigate the good quality of meta-sigmoid sinus microvascular decompression(MVD).

• 目的探讨原发三叉神经痛发病机制并探讨乙状窦后入路三叉神经根微血管减压术治疗原发三叉神经痛的优点。