A cervical spine spacer includes a spacer body configured to be disposed between adjacent cervical vertebrae in the cervical spine and to maintain a desired spacing between the adjacent cervical vertebrae. The cervical spine spacer also includes a channel passing completely through the spacer body from a first surface of the spacer body to a second surface of the spacer body and a fastener configured to pass through the channel. At least one of the first surface and the second surface is configured to contact one of the adjacent cervical vertebrae and the channel is sized to accommodate the fastener passing through the channel at a plurality of angles.