Disclosed is an assembly and method for implant installation between
adjacent vertebral bodies of a patient. The implant has a support body
and a rotatable insert therein and the support body is curved for
installation between adjacent vertebral bodies transforaminally. An
installation instrument is also disclosed for removable attachment to
implant and engagement with the rotatable insert to selectively permit
rotation between the insert and the support body. The installation
instrument extends along a longitudinal tool axis and when the
installation instrument is in a first position the insert is rotationally
fixed with respect to the support body and when the installation
instrument is in a second position the support body may rotate with
respect to the insert.