A spinal system (605; 705) comprising: - a plate member (650; 750) comprising a body (610; 710) having an upper surface, a lower surface, a front surface and a rear surface, an upper rim extending from the upper surface of the body and a lower rim extending from lower surface of the body, wherein the upper rim includes an upper screw hole extending through the upper rim and the lower rim includes a lower screw hole extending through the lower rim, wherein the upper screw hole includes a first central axis that passes therethrough and the lower screw hole includes a second central axis that passes therethrough, wherein the upper screw hole is angled in an upward direction through the upper rim and the lower screw hole is angled in a lower direction through the lower rim, wherein the plate member further includes a rotatable blocking mechanism positioned between the upper screw hole and the lower screw hole; - a first screw insertable through the upper screw hole, wherein the first screw is oriented in an upward direction; - a second screw insertable through the lower screw hole, wherein the second screw is oriented in a downward direction; and - a spacer (610; 710) attachable to the plate member (650; 750), wherein the spacer comprises an upper surface and a lower surface, - wherein the spacer (610; 710) includes a longitudinal axis that extends vertically from the upper surface of the spacer to the lower surface of the spacer, wherein the first central axis of the upper screw hole is positioned in its entirety above the upper surface of the spacer, and the second central axis of the lower screw hole is positioned in its entirety below the lower surface of the spacer, characterized in that - the plate member (650; 750) includes one or more stabilizers (663; 763) or knife-like edges (663; 763) that can help secure the plate member to a vertebral body, the one or more stabilizers include a first knife-like edge (663; 763) that extends upwardly and a second knife-like edge (663; 763) that extends downwardly - and in that the first upper screw hole has been raised such that a central axis of the first upper screw hole is positioned higher than the upper surface of the spacer and the second lower screw hole has been lowered such that a central axis of the second lower screw hole is positioned below the lower surface of the spacer. - a plate member (650; 750) comprising a body (610; 710) having an upper surface, a lower surface, a front surface and a rear surface, an upper rim extending from the upper surface of the body and a lower rim extending from lower surface of the body, wherein the upper rim includes an upper screw hole extending through the upper rim and the lower rim includes a lower screw hole extending through the lower rim, wherein the upper screw hole includes a first central axis that passes therethrough and the lower screw hole includes a second central axis that passes therethrough, wherein the upper screw hole is angled in an upward direction through the upper rim and the lower screw hole is angled in a lower direction through the lower rim, wherein the plate member further includes a rotatable blocking mechanism positioned between the upper screw hole and the lower screw hole; - a first screw insertable through the upper screw hole, wherein the first screw is oriented in an upward direction; - a second screw insertable through the lower screw hole, wherein the second screw is oriented in a downward direction; and - a spacer (610; 710) attachable to the plate member (650; 750), wherein the spacer comprises an upper surface and a lower surface, - wherein the spacer (610; 710) includes a longitudinal axis that extends vertically from the upper surface of the spacer to the lower surface of the spacer, wherein the first central axis of the upper screw hole is positioned in its entirety above the upper surface of the spacer, and the second central axis of the lower screw hole is positioned in its entirety below the lower surface of the spacer, characterized in that - the plate member (650; 750) includes one or more stabilizers (663; 763) or knife-like edges (663; 763) that can help secure the plate member to a vertebral body, the one or more stabilizers include a first knife-like edge (663; 763) that extends upwardly and a second knife-like edge (663; 763) that extends downwardly - and in that the first upper screw hole has been raised such that a central axis of the first upper screw hole is positioned higher than the upper surface of the spacer and the second lower screw hole has been lowered such that a central axis of the second lower screw hole is positioned below the lower surface of the spacer.