INTRINSIC VASCULATURE OF THE LABYRINTHINE SEGMENT OF THE FACIAL-NERVE - IMPLICATIONS FOR SITE OF LESION IN BELLS-PALSY
INTRINSIC VASCULATURE OF THE LABYRINTHINE SEGMENT OF THE FACIAL-NERVE - IMPLICATIONS FOR SITE OF LESION IN BELLS-PALSY
复制标题
DOI：
10.1177/019459989110400105
复制
发表时间：
1991-01-01
影响因子：
3.4
通讯作者：
RUCKER, NC
中科院分区：
文献类型：
--
作者：
BALKANY, T;FRADIS, M;RUCKER, NC
最近对猫面神经固有血管系统的研究表明，面神经节段的血供相对较差。本研究在25块颞骨和3条新鲜的尸体神经上，系统地观察了人面神经的固有血管。 获得了乳突、鼓室和乳突段的横截面血管计数。 每个片段的毛细血管密度来自这些数据。 人的面神经的乳突段和猫的面神经一样，比乳突段和鼓室段含有更少和更小的内在血管。 这可能表明面神经的甘氨酸段可能更容易受到缺血性损伤。 结合先前证实的输卵管狭窄，这些发现支持了输卵管段可能是贝尔麻痹病变部位的论点。
Recent studies of the intrinsic vasculature of the cat facial nerve have demonstrated relatively poor blood supply to the labyrinthine segment. In this study, the intrinsic vasculature of the human facial nerve was systematically evaluated in 25 temporal bones and three fresh cadaver nerves. Cross-sectional vessel counts were obtained for the labyrinthine, tympanic, and mastoid segments. Capillary densities for each segment were derived from these data. The labyrinthine segment of the human facial nerve, like that in the cat, contains fewer and smaller intrinsic blood vessels than do the mastoid and tympanic segments. This may indicate that the labyrinthine segment of the facial nerve may be more vulnerable to ischemic damage. In conjunction with the previously demonstrated narrowness of the labyrinthine fallopian canal, these findings support the contention that the labyrinthine segment is a likely site of lesion in Bell's palsy.