周围性面神经损伤患者对侧神经支配的研究

目的　通过测定面神经损伤患者组及大学生志愿者组面神经各分支对侧神经支配率 ,探讨周围性面肌瘫痪恢复过程中面神经对侧代偿支配的问题。方法　分别测定大学生志愿者 2 2例( 2 2侧 )及 10 8例面神经损伤患者的面神经电图对其对侧神经支配率进行分析其中损伤组又按发病原因不同 ,分为医源性损伤组、Bell氏面瘫组和创伤性损伤组 ,测试损伤支数为Ⅰ支 76支 ,Ⅱ支 81支 ,Ⅲ支 88支 ,Ⅳ支 6 6支。结果　①损伤组 3组间对侧支配率差异无显著性 (P >0 0 5 ) ;②损伤组Ⅰ、Ⅱ支对侧支配率明显高于志愿者组 (P <0 0 0 1) ;③损伤组Ⅰ支对侧支配率明显高于Ⅱ支(P <0 0 0 1)。结论　面神经损伤后 ,存在对侧神经支配功能增强的表现

A study of 108 cases on facial nerve contralateral innervation after facial nerve injury

OBJECTIVE: To investigate the facial nerve contralateral innervation of patients with facial nerve injury. METHODS: Electroneuronography (ENoG) of 22 university student volunteers (US) without any injury and systemic diseases and 108 patients with facial nerve injury were measured. The patients were divided into three groups: iatrogenic, traumatic, and Bell's palsy groups. When stimulating the facial nerve at the site below the lobule and behind the ramus, ENoGs of each branch of the facial nerve on ipsilateral and contralateral sides were recorded. A total of 76 branch I, 81 branch II, 88 branch III, and 66 branch IV were measured. RESULTS: (1) There were no significant differences among three patient groups (P > 0.05). (2) The ratios of contralateral innervation of the branch I and II of the patients were significantly. greater than those of the US group (P < 0.001). (3) The ratio of contralateral innervation of the branch I was greater than that of the branch II in the patients (P < 0.001). CONCLUSION: The contralateral innervation of the facial nerve increases after facial nerve injured.