Conclusion To know the locations of the dural sinuses at cranial base according to skull bony landmarks can improve greatly the safety and efficiency of craniotomy during the posterolateral approach.

• 结论根据颅骨表面标志判明硬脑膜静脉窦的位置,开颅时可以有效地保护横窦、乙状窦,并能更充分地利用颅底有限的暴露空间,使得整个开颅过程更加微创和高效。