Bozbuga Mustafa, Boran Burak O, Sahinoglu Kayihan
Research and Training Hospital, 2nd Neurosurgery Clinic, Istanbul, Turkey.
Neurosurg Rev. 2006 Jan;29(1):61-3. doi: 10.1007/s10143-005-0417-2. Epub 2005 Oct 15.
Knowing the location of the venous sinuses is essential for the localization of the initial burr-hole for a retrosigmoid approach, in order to avoid inadvertent entry into the venous sinuses and limitation of the size of the bony opening. In this anatomic study, external landmarks of the posterolateral cranium have been studied, in order to reveal the relationship with the venous sinuses. Eighty-four dried adult human skulls were studied and study of both sides yielded 168 sides. Morphometric measurements of the posterolateral cranium have been performed and relations of the external landmarks with the venous sinuses have been studied. The anatomic position of the asterion was variable. The superior nuchal line was roughly parallel and below the lower margin of the sulcus of transverse sinus in all specimens. The sigmoid sinus, between the superior and inferior bends, seemed to descend along an axis defined by the junction of the squamosal-parietomastoid suture and the mastoid tip, in a slightly oblique fashion. In conclusion, a burr-hole placed just below the superior nuchal line and posterior to the axis defined by the mastoid tip and the squamosal-parietomastoid suture junction is appropriate for both avoiding inadvertent entry into the sinus and limiting the size of the craniotomy.
了解静脉窦的位置对于乙状窦后入路初始骨孔的定位至关重要，以避免意外进入静脉窦并限制骨窗大小。在这项解剖学研究中，对颅后外侧的外部标志进行了研究，以揭示其与静脉窦的关系。研究了84个干燥的成人人类颅骨，双侧研究共得到168侧。对颅后外侧进行了形态学测量，并研究了外部标志与静脉窦的关系。星点的解剖位置是可变的。在所有标本中，上项线大致平行于横窦沟下缘并位于其下方。乙状窦在上下弯曲之间，似乎沿着由鳞部-顶乳突缝和乳突尖的交界处所确定的轴线以略微倾斜的方式下降。总之，在上项线下方、乳突尖与鳞部-顶乳突缝交界处所确定的轴线后方放置骨孔，既适合避免意外进入静脉窦，又适合限制开颅手术的大小。
