Because traditional methods such as autografting and allografting have some shortcomings, people have been searching the bone substitutes. 由于传统的治疗方法一自体或异体骨移植都存在一定的问题，因此人们一直在进行人工植骨材料的研究。
The nonunions and delayed unions were repaired with autogenous iliac bone grafts.Three graft fractures were treated conservatively. 本研究亦发现同时加上自体骨移植可加速异体骨愈合并减少未愈合率。
