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[The dynamics of bone defect healing after the implantation of collagen and hydroxyapatite complexes (an experimental morphological study)].

Healing of standard bone defects in the distal third of the femoral bone was studied in experiments on 48 rats. In order to repair the defect, colapol or a new composition with structurized collagen and hydroxyapatite powder and granulate KP-2 were used. Histological study showed that healing was optimal after repair with KP-2 composition: callus formed rapidly, as did the typical osseogranular complexes. Newly formed bone structures mature much sooner than after implantation of colapol. The authors come to a conclusion that the use of KP-2 composition holds good promise as material for maxillofacial surgery in plastic repair of bone defects.