摘要
目的 :了解乙状窦的解剖变异对颞骨径路在内镜下行桥小脑角区病变手术的影响。方法 :在 2 0例 4 0侧成人尸头上模拟颞骨径路内镜手术 ,测量乙状窦距颞骨表面距离 ,乙状窦宽度和高度 ,乙状窦与外耳道后壁距离 ,乙状窦内侧距内淋巴囊、共脚及内淋巴管的距离 ,并进行统计学分析。 结果 :乙状窦距颞骨表面距离 (以乙状窦上膝为标准 )为 (5 .2 7± 1.6 0 ) m m;乙状窦宽度为 (11.97± 2 .10 ) m m,上下膝长度为 (2 4 .78± 4 .2 1) mm;乙状窦与外耳道后壁距离为 (13.5 9± 3.0 3) m m;乙状窦内侧距内淋巴囊外侧距离为 (3.73± 1.6 6 ) mm,距共脚距离为 (13.89± 2 .34) mm,距内淋巴管距离为 (10 .6 2± 2 .0 9) mm。结论 :当遇到乙状窦前移、深位乙状窦或宽大乙状窦等情况时 ,施行迷路后径路内镜手术难度很大 。
Objective: To study how the anatomy variation of sigmoid sinus affect the petroclival surgery aided by endoscopy. Methods: Radical mastoidectomy in 20 adult cadaveric specimens(40 sides) was carried out, exposing endolymphatic sac,sigmoid sinus and common crus. The distance from sigmoid sinus to temporal bone surface, to back wall of external acoustic meatus,to endolymphatic sac,to common crus and to endolymphatic duct,and the width and height of sigmoid sinus were all measured. Results: The distance from temporal bone surface to sigmoid sinus was (5.27±1.60) mm,4 of them were more than 7 mm (10%).The width of sigmoid sinus was (11.97±2.10) mm,3 of them were more than 15 mm (7.5%).The height of sigmoid sinus was (24.78±4.21) mm.The distance between sigmoid sinus and back wall of external acoustic meatus was (13.59±3.03) mm,5 of them were less than 10 mm(12.5%). Distance between sigmoid sinus and endolymphatic sac was (3.73±1.66) mm,from sigmoid sinus to common crus was (13.89±2.34) mm,to endolymphatic duct was (10.62± 2.09) mm. Conclusion:It is very difficult to carry the operation when there is an anterior sigmoid sinus, or inner sigmoid sinus or wider sigmoid sinus,in this case endoscopic surgery by retrolabyrinthine approach is not recommended.
出处
《第二军医大学学报》
CAS
CSCD
北大核心
2003年第1期93-95,共3页
Academic Journal of Second Military Medical University
基金
第二军医大学长征医院联合攻关课题(2 0 0 2 0 1)
关键词
乙状窦
内镜
岩斜坡区
迷路
sigmoid sinus
endoscopy
petroclival area
labyrinth
