Osteoconduction Potential of an Injectable Calcium Phosphate in Orthopaedic Surgery in Fillings of Osseous Defects

A lot of osseous substitution products were already used to fill osseous defects in order to prevent losses of osseous that are envisaged and so prejudicial.

Synthetic calcium phosphate ceramics (particularly granulated forms) already has shown their osteoconduction potential in human at different sites. But it is difficult to put these granules in very little place.

The injectable form of calcium phosphate granules "ready to use" is easier to be used and allow a diminution of the risk of infection during surgery, and permit homogeneity of the biomaterial.

Injectable form of calcium phosphate granules did already has shown his biocompatibility and biofunctionality in animals.

The purpose of this study is to study the biocompatibility and biofunctionality of this biomaterial in his injectable form in fillings of little losses of osseous substance from various origins were no charge will act to the biomaterial.

Inclusion criteria

• Medium osseous defects (inferior to 20 cc) without articular communication
• Patients without a personal medical history of bone infection, cancer, diabetes, tuberculosis, and in general, any pathology which could interfere with the results of the study or expose the patient to additional risk
• Patients without drepanocytosis, or congenital or acquired immunizing deficit
• Patients who have the benefit of a social security system, a previous medical exam and who were informed and gave free consent about this study

Exclusion criteria

• Proven nicotinism and alcoholism
• Pregnant or nursing women
• Patients who received another study drug or another study device in the past 3 months or patients who will be included in another clinical study
• If postoperative follow-up for a patient is considered to be random by the investigator, he/she should not be included