A spinal spacer assembly is provided. The spinal spacer assembly includes a spinal spacer having a wall configured to enclose a hollow interior, wherein the wall is further configured to have a top portion and a bottom portion. The top and bottom portions are configured to include a plurality of protrusions configured to protrude away from the top and bottom portions. The wall is further configured to have a variable degree curvature and include a plurality of grooves and an opening.