BACKGROUND: Metal vertebral fusion cage can induce some disadvantages and pseudoarticulation formation such as stress dodge, fusion cage subsidence, bone resorption, prolapse and bone collapse.

• 背景：金属椎间融合器存在应力遮挡、融合器下沉、骨吸收、脱出、骨塌陷所带来的并发症和假关节形成等，影响融合效果。