Lumbar segmental instability is a temporary phase in the degenerative process of the lumbar spine.
腰椎节段性失稳是腰椎退变过程中一个暂时的阶段。
The general belief today is that disc degeneration leads to segmental instability in the sagittal plane and may result in DS.
现阶段一般的看法是椎间盘变性导致了失状位的节段性不稳定，有可能导致退行性椎体滑移。
Method: 72 cases (82 segments) with lumbar segmental instability were treated by PLIF with 3 kinds of interbody fusion techniques.
方法：本组采用3种PLIF手术治疗腰椎节段性不稳定患者72例，共82个节段。
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