A method for fixation of an intervertebral implant includes the steps of: a) applying a spreading force to a first and second adjacent vertebral bodies； b) removing the interbertebral disc between the adjacent first and second vertebral bodies； c) inserting a shaft of the bone anchors into the vertebral bodies, and fixing a head of the bone anchors to an intervertebral implant.一用於固定一椎間植入物之方法係包括下列步驟：a)施加一擴張力至一第一及第二相鄰椎體部；b)移除相鄰第一及第二椎體部之間的椎間盤；c)插入骨錨的一軸至椎體部內，及固定骨錨的一頭部至一椎間植入物。
