Nitek Stanisław, Wysocki Jarosław, Brozek Eliza
Department of Normal Anatomy, Medical University of Warsaw, Poland.
Folia Morphol (Warsz). 2002;61(4):305-8.
Retrolabyrinthine surgical access to the posterior and middle cranial fossa has a long history of use during the procedures aiming at the removal of small neo-plasmatic changes located in the area of the internal auditory tube. A precise knowledge of the anatomical alterations of the temporal bone in the aspect of the retrolabyrinthine access to the posterior cranial fossa determines a successful otoneurosurgical endoscopy, which involves a relatively narrow area. Forty-four cadaver temporal bones of both sexes were measured to obtain the dimensions of the surgical area limited by the sigmoid sinus, superior petrosal sinus and posterior labyrinth. The techniques of computer picture analysis were applied in the research. The mean value of the surface area of the figure limited by the sigmoid sinus, superior petrosal sinus and posterior semicircular canal was 175.9 mm2 with no significant differences between sexes and sides. The maximal measured value was 356 mm2, and the minimal was 84.3 mm2. The size of the surgical area is characterised by large deviation range but was always sufficient to insert the endoscopic device and standard otosurgical instruments.
经迷路后入路至后颅窝和中颅窝在旨在切除内听道区域小的肿瘤性病变的手术中有着悠久的使用历史。精确了解经迷路后入路至后颅窝时颞骨的解剖改变对于成功进行耳神经外科内镜手术至关重要，该手术涉及的区域相对狭窄。对44具男女尸体的颞骨进行测量，以获取由乙状窦、岩上窦和后半规管限定的手术区域的尺寸。研究中应用了计算机图像分析技术。由乙状窦、岩上窦和后半规管限定的图形的表面积平均值为175.9平方毫米，性别和左右侧之间无显著差异。最大测量值为356平方毫米，最小测量值为84.3平方毫米。手术区域的大小偏差范围较大，但始终足以插入内镜设备和标准耳外科器械。
