[Establishment of a goat model of tibial bone hole defect suitable for repair using injectable bone materials]

To prepare a goat model of tibial bone hole defect suitable for studies of bone defect repair using tissue-engineered injectable bone materials.

A circular hole bone defect 1.2 cm in diameter was induced below the tibial medial plateau of the goat. X-ray, histological inspection, and image analysis were carried out to evaluate the validity of the model in simulating limb bone defect for the study of tissue-engineered injectable bone materials.

At 4 and 8 weeks after the operation, neither X-ray nor histological examination showed obvious bone tissues in the bone defect. Image analysis showed a area of new bone tissue formation of (8.79 - or + 3.63)% in the total defect area at 4 weeks, which increased to (15.41 - or + 4.21)% at 8 weeks.

The goat model of tibial bone hole defect established in this study is suitable for studying the ability of injectable bone materials for repairing limb bone defect, and offers a simple and reliable means to simulate the local condition of bone regeneration and mechanical environment of bone defect in the limbs.