Results The posterior fossa can be reached through suboccipital approach, the structures in infratmporal fossa can be exposed directely through the corridor between the atlas and mandibular ramus.

• 结果该入路直接沿乙状窦、颈内静脉的移行方向显露颈静脉孔区结构,其中后颅窝可经枕下显露,颞下窝藉寰椎与下颌升支间的自然间隙显露。