以前认为,下颌骨骨折引起面神经麻痹的原因有三个方面:下颌骨碎片切断面神经的颞骨外段,在茎乳孔处受到过度牵拉、继发性水肿扩散至面神经管以及髁状突手术致伤等。在某种情况下,髁状突能以足够的力量撞击颞骨、产生骨折而损伤面神经管。文献复习Milford氏曾记述一例髁状突骨折3天后发生左侧面神经麻痹的患者,其损害定位试验(Site of lesion testing)表明病变位于膝状神经节远中的面神经管。颞骨X线断层 Previously, the mandibular fracture caused facial nerve paralysis for three reasons: the mandibular fragment cut the facial nerve of the temporal bone in the outer segment of the Department in the Department of milk holes are too stretched, secondary edema spread to the facial nerve canal and condylar surgery injury Wait. In some cases, the condyle can hit the temporal bone with sufficient force to produce a fracture that damages the facial nerve canal. Literature review Milford's described a case of left facial paralysis occurring in 3 days after condyle fractures. His site of lesion testing showed that the lesion was located in the facial nerve canal distal to the geniculate ganglia. Temporal bone X-ray