Phosphocalcic cement composition comprising blood

An apatitic calcium phosphate cement obtainable by a process comprising the following steps:

• the preparation of a bone cement paste by mixing a powder component and a liquid component comprising blood, and
• wherein the powder component comprises, in relation to the total weight of the powder component:
• at least 70% by weight of α-tricalcium phosphate (α-TCP) particles having an average size greater than or equal to 9 μm, wherein said average size is the mean equivalent diameter of said particles measured by LASER diffraction analysis;
• and
• at least 5% by weight of calcium-deficient apatite (CDA);
• wherein the liquid component (L)/powder component (P) ratio is between 0.3 and 0.7 mL/g;
• and
• wherein the bone cement paste has a setting time ranging from 10 minutes to 72 hours;
• and
• the setting of said bone cement paste;
• wherein the apatitic calcium phosphate cement has a compressive strength between 2 MPa and 15 MPa.