A-The macroscopic images of the TCP400, Sr5TCP, Sr10 TCP and Sr20 TCP scaffolds after the repair of the bone defect at 4 and 8 weeks after surgery; B-Micro-CT images of 1, 4, and 8 weeks after implantation of the scaffold into the bone defect (yellow is the scaffold material, the gray on the scaffold is the new bone, and the surrounding gray is the host bone, the red box is the coronal section of the micro-CT), scale bar = 2 mm; C-The relative bone volume (BV/TV), the trabecular thickness (Tb·Th), the number of bone trabeculae (Tb·N) and the bone mineral density (BMD) after 4 and 8 weeks of repairing bone defects with Β-TCP、Sr5TCP、Sr10 TCP and Sr20 TCP scaffolds. *, # and & represents a significant difference compared to Β-TCP, Sr5TCP and Sr10 TCP group, respectively, */#/& p < 0.05, **/##p < 0.01, ***p < 0.001.