1·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。
2·Objective To observe the effect of patients with lumbar spinal stenosis by lumbar posterolateral fusion and decompression.
目的观察腰椎后外侧融合和椎管减压治疗腰椎管狭窄症的疗效。
3·Objective To compare the curative effect of PDA surgical ligation between left Ausculatry triangle thoracotomy(ATT) and Posterolateral incision(PLT).
目的评估左听诊三角切口（ATT）与后外侧切口（PLT）下动脉导管未闭（PDA）缝扎术的疗效。