【摘要】 目的为改良迷路下入路开放内耳道手术提供解剖学参考。方法在10例尸头标本(左右耳各10侧)上模拟改良迷路下入路开放内耳道手术,进行相关解剖测量和观察。结果本实验有16侧(左右耳各8侧)经改良迷路下入路能开放内耳道后壁,平均暴露长度为内耳道后壁总长度(72.44±14.19)%,后半规管下端到颈静脉球顶端的距离平均值(4.60±3.47)mm,迷路下区面神经垂直段和乙状窦距离平均值(8.40±2.74)mm,颈静脉球顶端到内耳道距离平均值(5.88±2.88)mm,内淋巴囊上端到内耳道距离平均值(13.24±3.41)mm。结论改良迷路下入路内耳道手术创伤小,但难度较大,选择合适病例,做好相关术前准备,是能安全有效完成该类手术的。更多还原

【Abstract】 OBJECTIVE To study the modified infralabyrinthine approach in order to open the internal auditory canal,and to provide anatomic reference.METHODS In this study,the modified infralabyrinthine approach was performed on 10 adult cadaver heads(20 sides temporal bones),and some relative structures were observed and measured.RESULTS The posterior wall of internal auditory canal was opened successfully in 16/20 sides temporal bones via the modified infralabyrinthine approach,the average exposure length was(72.44± 14.19)%of the whole length of the internal auditory canal.The mean distance from the inferior edge of the posterior semicircular canal to the superior edge of the jugular bulb was(4.60 ±3.47) mm,the mean distance from the vertical portion of the facial nerve to the anterior edge of the sigmoid sinus in the infralabyrinthine area was(8.40±2.74) mm,the mean distance from the superior edge of the jugular bulb to the internal auditory canal was(5.88±2.88) mm,the mean distance from the superior edge of endolymphatic sac to the internal auditory canal was(13.24 ±3.41) mm.CONCLUSION The modified infralabyrinthine approach had the advantages of tiny trauma and the disadvantages of more difficulty,if we selected suitable cases and prepared sufficiently,the surgery could be achieved safely and effectively.更多还原