A spinal implant configured for placement within an intervertebral space of a human subject, comprising: an anterior wall and a posterior wall, said posterior wall being generally opposite of said anterior wall; a first lateral wall and a second lateral wall, said first and second lateral walls configured to extend between the anterior wall and the posterior wall; wherein the length of the implant from the first lateral wall to the second lateral wall is between 40 mm and 60 mm; at least one internal chamber defined, at least in part, by the anterior wall, the posterior wall and the first and second lateral walls; a top surface comprising a plurality of teeth configured to at least partially engage a lower surface of a first vertebral body; a bottom surface comprising a plurality of teeth (40") configured to at least partially engage an upper surface of a second vertebral body, the second vertebral body being adjacent to said first vertebral body; wherein the at least one internal chamber extends at least partially from the top surface to the bottom surface 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; at least one insertion tool receiving 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 insertion tool receiving port; wherein the implant is configured to span across an entire width of the adjacent first and second vertebral bodies; wherein each of the first and second lateral walls is configured to generally align with peripheral bearing areas of the first and second vertebral bodies, wherein the peripheral bearing areas of the vertebral bodies are located at the lateral ends of the vertebral bodies when viewing the anterior or posterior wall of the implant; wherein the at least one insertion tool receiving port is configured to receive at least one graft material delivered into the at least one internal chamber; characterised in that the posterior wall does not comprise any openings; and the thickness of each of the first and second lateral walls is approximately 10% to 20% of the overall length of the implant. an anterior wall and a posterior wall, said posterior wall being generally opposite of said anterior wall; a first lateral wall and a second lateral wall, said first and second lateral walls configured to extend between the anterior wall and the posterior wall; wherein the length of the implant from the first lateral wall to the second lateral wall is between 40 mm and 60 mm; at least one internal chamber defined, at least in part, by the anterior wall, the posterior wall and the first and second lateral walls; a top surface comprising a plurality of teeth configured to at least partially engage a lower surface of a first vertebral body; a bottom surface comprising a plurality of teeth (40") configured to at least partially engage an upper surface of a second vertebral body, the second vertebral body being adjacent to said first vertebral body; wherein the at least one internal chamber extends at least partially from the top surface to the bottom surface 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; at least one insertion tool receiving 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 insertion tool receiving port; wherein the implant is configured to span across an entire width of the adjacent first and second vertebral bodies; wherein each of the first and second lateral walls is configured to generally align with peripheral bearing areas of the first and second vertebral bodies, wherein the peripheral bearing areas of the vertebral bodies are located at the lateral ends of the vertebral bodies when viewing the anterior or posterior wall of the implant; wherein the at least one insertion tool receiving port is configured to receive at least one graft material delivered into the at least one internal chamber; characterised in that the posterior wall does not comprise any openings; and the thickness of each of the first and second lateral walls is approximately 10% to 20% of the overall length of the implant.