"The use of bone grafts, using both membranous and endochondral bone, has become standard paractice in craniomxillofacial surgery. Bone from cranium, rib, or ilium can be used as either onlay or inlay grafts to reconstruct the craniofacialskeleton. Cranial bone has become a frequent source of material for bone grafting, as there was less resorption of cranial bone as membranous bone than with rib or ilium as endochondral bone. But we do not like it because of its difficulty of procurement nd brittleness of the bone and exposure of cranial cavity. Rib graft can be bent easily and obtained large amount, but pneumothorax as complication can be occurred. In case of multiple trauma patient, if pnemothorax or hemothorax pre-exist, it impose burden on a operator as source of bone graft. We prefer iliac boen as our favirite source of boen graft, despite of high resorption rate, to decrease donor morbidity and harvesting time of bone graft in case of multiple trauma patient. To reduce resorption rate, we try that the periosteumwas presered as possibel, and contact surface was increased through exact shaping, and rigid fization with miniplte or lag screw was performed. On onlay bone graft, the cortical surface of graft was placed in contct with overlying soft tissue and the cancellous surface was placed in contact with recipient bone.
 Authores have performed iliac bone graft in 18 patients during a 3-year period, and have obained facorable results. The clinicla cases and a review of the literature are here reported.
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