Fig. 1

In week 4, X-ray: group SF/CPC exhibits non-complete bone defect repair, the bone cortex is discontinuous, and the interface line of bone ends is visible (a); group SF/CPC/PB exhibits the completeness of filling material at the bone defect site, new bones are rich, and the bone cortex is fine and continuous (b); group PB exhibits not-yet-repaired bone defect, but the trabecular bone tends to neat arrangement, and the bone defect exhibits bone connection (c); and group C exhibits low-density shadow of soft tissue at the bone defect site, and the bone defect is not repaired (d)