A spinal implant for insertion between adjacent upper and lower vertebral endplates, the spinal implant comprising: superior and inferior surfaces (102; 104) for contacting the upper and lower endplates respectively with each surface comprising a plurality of surface teeth; a side wall connecting the superior and inferior surfaces (102; 104), wherein the side wall comprises an anterior wall and a posterior wall that are connected by a right lateral wall and a left lateral wall, wherein the posterior wall is shorter than the anterior wall such that an angulation (α) between the superior and the inferior surfaces (102; 104) is from about 2 to about 30 degrees; at least one recess formed in the anterior wall, the recess being adapted to receive an insertion tool; and vertical through-channels (124; 126) extending through the implant from the superior surface to the inferior surface with at least one vertical strut separating the channels (124; 126), wherein a width of the implant is defined as a longitudinal distance between the centers of the right and left lateral walls (116; 118), a length of the implant is defined as a horizontal distance between the centers of the anterior and posterior walls (112; 114), and a height of the implant is defined as a vertical distance between the superior and inferior surfaces (102; 104) at an anterior most edge of the implant, the height accounting for a convexity of the superior and inferior surfaces (102; 104) and including one-half of a height of the surface teeth disposed on the superior and inferior surfaces (102; 104), and wherein the superior and inferior surfaces (102; 104) are convex having respective radius of curvature values (R S; R I), wherein the angulation (α) is greater than 6 degrees, characterised in that the inferior radius of curvature (R I) is at least 20% larger than the superior radius of curvature (R S). superior and inferior surfaces (102; 104) for contacting the upper and lower endplates respectively with each surface comprising a plurality of surface teeth; a side wall connecting the superior and inferior surfaces (102; 104), wherein the side wall comprises an anterior wall and a posterior wall that are connected by a right lateral wall and a left lateral wall, wherein the posterior wall is shorter than the anterior wall such that an angulation (α) between the superior and the inferior surfaces (102; 104) is from about 2 to about 30 degrees; at least one recess formed in the anterior wall, the recess being adapted to receive an insertion tool; and vertical through-channels (124; 126) extending through the implant from the superior surface to the inferior surface with at least one vertical strut separating the channels (124; 126), wherein a width of the implant is defined as a longitudinal distance between the centers of the right and left lateral walls (116; 118), a length of the implant is defined as a horizontal distance between the centers of the anterior and posterior walls (112; 114), and a height of the implant is defined as a vertical distance between the superior and inferior surfaces (102; 104) at an anterior most edge of the implant, the height accounting for a convexity of the superior and inferior surfaces (102; 104) and including one-half of a height of the surface teeth disposed on the superior and inferior surfaces (102; 104), and wherein the superior and inferior surfaces (102; 104) are convex having respective radius of curvature values (R S; R I), wherein the angulation (α) is greater than 6 degrees, characterised in that the inferior radius of curvature (R I) is at least 20% larger than the superior radius of curvature (R S).