Fig. 1
Hematoxylin–eosin staining of periosteum and regenerated bone. a The regeneration chamber was mainly composed of hematoma and inflammatory cells at postoperative third day. b Regenerated bone tissue was already visible at 1 week after surgery. c Within postoperative one-month period, complete bone regeneration had been achieved. d At 6 months after the surgery, the regenerated bone was well remodeled