The invention relates to a planar alloplastic bone replacement material comprising at least one plate, preferably comprising multiple plates, for augmentation of bone defects, whereby the bone replacement material consists of a biocompatible plastic material, a biocompatible metal and/or a biocompatible metal alloy, whereby the at least one plate comprises a planar structure (1) and comprises a plurality of pins (2) extending outwards from the planar structure (1) of the at least one plate, whereby the pins (2) each comprise at least one connecting element (4), whereby the pins (2) are deformable elastically and are arranged sufficiently close to each other such that pressing the surfaces of multiple plates onto each other causes the connecting elements (4) of different plates to interlock with and/or snap into each other and the mutually interlocked and/or snapped-in plates form an open-pored body of mutually interlocked and/or snapped-in plates. The invention also relates to a method for forming a body made of said planar alloplastic bone replacement material, in which multiple plates are pushed against each other, whereby the plates interlock with and/or snap into each other and form an open pored body.
