The invention concerns a bone substitute with controlled anatomical shape and
macroporous structure made from chemically consolidated cement phosphocalcic materials.
Said substitute can be obtained by forming a liquid or plastic paste consisting
of calcium phosphate and other hardly soluble calcium slats. The forming by molding
used with a paste and its chemical consolidation ex-vivo enables an entity to obtain
a substitute having a more or less large size whereof the controllable anatomical
shape corresponds to that of the bone block to be replaced, and an adapted macroporous
architecture promoting rehabitation and resproption of the substitute, while ensuring
the best initial mechanical properties and their being preserved until the graft
is definitely replaced by the newly formed bone. The invention also concerns various
methods of producing the mold and the pore-forming phase which respectively define
the geometry and the porous architecture of the substitute during the forming by
cast molding or injecting of a phosphocalcic paste.
