Patent ID: 8795376

Claim:
A positioning insert for two adjacent vertebral bodies respectively having a height, a thickness and a intervertebral disc between the two adjacent vertebral bodies, the positioning insert consisting essentially of: a plate like insert adapted to fix relative positions of the two adjacent vertebral bodies and provided with a wedge shape to have a dull side, a sharp edge oppositely formed relative to the dull side and first holes defined through a side face of the plate like insert, wherein the sharp edge is formed to have an angle between 5 to 15 degrees; and an annular insert adapted to be inserted into a space between the two adjacent vertebral bodies and having second holes and a slot defined in a peripheral side face thereof to accommodate the plate like insert so as to have the plate like insert received in the slot, wherein the plate like insert has a bent and a tilted portion extending from the bent, and wherein the slot is oblique such that after the plate like insert is accommodated in the slot, the plate like insert is tilted relative to the annular insert.