A system and method facilitate insertion of a fusion implant into the
intervertebral space of a spine. The fusion implant may have a first bone
engaging surface and a second bone engaging surface. An attachment
interface on an insertion tool allows the implant to be releasably
secured to the insertion tool, so that the insertion tool may be detached
from the implant without requiring a threaded coupling. The implant may
be positioned in two different orientations with respect to the insertion
tool to permit usage of two different techniques to insert the implant
into the intervertebral space. A recessed support member in the implant
creates gaps between bone facing surfaces and the vertebral bodies such
that bone graft material may occupy the gaps. The implant includes
embedded radiographic markers which facilitate radiographic detection of
the orientation of the implant through the surrounding tissue.