Fusion device formed of a porous biocompatible material
An artificial spinal implant is disclosed for insertion between two adjacent vertebrae. Instrumentation and procedure is also disclosed.
1 . A fusion device for facilitating arthrodesis in a disc space between adjacent vertebrae, comprising:
an elongate body having a length and including a pair of oppositely disposed arcuate side walls extending along said length and adapted for engagement with the adjacent vertebrae, said arcuate side walls defining external threads extending substantially entirely along said length, said elongate body at least partially formed of a porous biocompatible material to permit bone tissue ingrowth into said arcuate side walls.
2 . The fusion device of claim 1 , wherein said elongate body has a hollow interior and at least one opening in communication with said hollow interior.
3 . The fusion device according to claim 2 , further comprising a bone growth inducing material disposed within said hollow interior.
4 . The fusion device of claim 2 , wherein said at least one opening extends through a corresponding one of said arcuate side walls.