Object: to evaluate the clinical effect of posterolateral bone graft fusion to pretend the adjacent segment degeneration after lumbar fusion and discuss the indication.
目的：评价在轻度退变的邻近节段行单纯后外侧植骨预防腰椎融合术后邻近节段退变的临床疗效，探讨其适应症的选择。
Objective. To review the bone graft options that exist for posterolateral and posterior interbody lumbar fusion.
目的：回顾后外侧与后侧腰椎椎间融合中骨移植物的选择。
AIM: To investigate the osteogenetic ability of calcium sulfate bone graft in posterolateral lumbar spinal fusion by comparing with local compression bone.
目的：在腰椎后外侧融合中，通过与自体减压骨进行比较，评价医用硫酸钙在腰椎后外侧融合中的成骨能力。
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