Patent ID: 8308805

Claim:
A method of treating a spine of a patient, comprising: positioning an implant between a first vertebral body and a second vertebral body, said first and second vertebral bodies being adjacent to one another, said implant comprising: at least one internal chamber defined, at least in part, by an anterior wall, a posterior wall and first and second lateral walls of the implant; at least one opening extending through the anterior wall, said at least one opening being in fluid communication with the at least one internal chamber; wherein the posterior wall of the implant does not comprise any openings; at least one access port located in at least one of the anterior wall, the first lateral wall and the second lateral wall, wherein the implant is configured to releasably secure to an insertion tool at said at least one access port; directing a volume of at least one graft material into the at least one internal chamber of the implant through the at least one access port to fill the at least one internal chamber of the implant such that the at least one graft material contacts an endplate surface of each of the first and second vertebral bodies, and wherein at least a portion of the at least one graft material exits through the at least one opening of the anterior wall when a sufficient volume of the at least one graft material has been delivered into the at least one internal chamber of the implant; wherein the at least one internal chamber extends from or near an endplate of the first vertebral body to or near an endplate of the second vertebral body such that graft material directed into the at least one internal chamber can be substantially retained between the first and second vertebral bodies.