Objective To evaluate the clinical value of Bagby and Kuslich(BAK), polyether ether tetone(PEEK) and iliac bone autograft (IBAG) on cervical spine fusion.

• 目的评价金属笼状椎间融合器(BAK)、聚醚醚酮椎间融合器(PEEK)、自体髂骨3种颈前路融合材料的临床价值。