Fig. 4

MicroCT of the tibial bone graft area. (a) 3-month group, illustrating new bone growth along the scaffold surface and center. The bone appears partially connected and partially wrapping around the scaffold surface, with incomplete penetration in the center. (b) 6-month sheep group, demonstrating increased and thickened new bone compared to the 3-month group. The new bone envelops the scaffold surface and penetrates through the scaffold center.