Objective To study the microanatomy of suboccipital extreme lateral approach and improve the safety of suboccipital extreme lateral approach in treatment of lesions of craniocervical junction region.

• 目的研究枕下极外侧手术入路中的显微解剖结构,以提高颅颈交界区病变经枕下极外侧入路手术的安全性。