Fig. 3. Micro-computed tomographic view. (A) Gelatin sponge graft at 4 weeks postoperatively. (B) The gelatin sponge/rhBMP-2 graft at 4 weeks postoperatively. (C) Gelatin sponge graft at 8 weeks. (D) Gelatin sponge/rhBMP-2 graft at 8 weeks. W: Weeks. (E) Analysis of bone volumes in defect regions (BV). At 4 weeks, mean BV in the control and experimental groups were 144.49 ± 46.25 mm3 and 224.35 ± 75.48 mm3, respectively, and at 8 weeks, mean BVs were 173.27 ± 38.19 mm3 and 318.27 ± 84.89 mm3, respectively (*P = 0.008) (n = 5 for each group).
