下颌骨大块缺损(超过下颌骨80%以上者)的修复,按常规的植骨方法通常需时较久及多次手术,且失败率高。由于癌肿的广泛切除或创伤性摘除,植骨的同时常需补充大量软组织,补充的软组织很难具有如原来组织那样良好的血液供应。受植区疤痕组织不可能为移植骨提供必需的营养床。此外,死腔不可能消除,并可发生血肿及浆液肿。由于上述因素,使用游离髂骨或肋骨移植,感染和或骨吸收的发生率显著。因之,需要以活 Large mandibular defect (over the mandible more than 80%) of the repair, according to the conventional bone graft method usually takes longer and more surgery, and the failure rate. Due to extensive resection or traumatic removal of cancer, bone grafting is often accompanied by a large amount of soft tissue supplementation, and it is difficult for the supplemented soft tissue to have a good blood supply as the original tissue. Graft tissue implants can not provide the necessary nutrition bed for the graft. In addition, the dead space can not be eliminated, and hematoma and serous swelling may occur. Due to the above factors, the incidence of infection and / or bone resorption is significant with free iliac or rib grafts. Therefore, we need to live