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Journal Article
Research Support, Non-U.S. Gov't
Free calvarial periosteum graft vascularized by an omental flap in a rat model.
Annals of Plastic Surgery 2011 December
Because omental flaps are useful for flap prefabrication and the cambium layer of the periosteum can be osteogenic, we examined whether calvarial periosteum grafted onto greater omentum of rats was osteogenic and suitable for a flap. Distal omentum was wrapped with calvarial periosteum and so the cambium faced the omentum. Grafted omentum was harvested at 1 to 9 days. In other rats, grafted omentum was elevated as a pedicled flap and moved to the abdominal subcutis, to be harvested later at 1 to 5 months after the initial surgery. Bone formation was evaluated histologically, histochemically, and radiographically. On day 3, osteoid had formed. From day 4, calvarial periosteum was revascularized by omentum and bone was forming. New bone was maintained after grafting to subcutis for 5 months. Thus, bone formed by periosteum on the omentum could be used to reconstruct defects of the bone.
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