An intervertebral filling includes a supporting body, a buffer layer
covering the supporting body and at least two positioning pins, each
positioning pin has a sharp end exposed out of the buffering layer, and
the intervertebral filling uses this sharp ends of the positioning pins
to stay in two adjacent spinal vertebrae end-plates. The supporting body
is a little harder than the buffer layer and is used for sharing stress
in the spine, providing a strong support. Consequently, the
intervertebral filling of the present invention remains stably positioned
between the two adjacent spinal vertebrae end-plates without undergoing
displacement.