目的探讨腰椎间盘突出症合并节段性不稳的诊断与治疗方法。
Objective To study diagnosis and treatment of segmental instability in lumbar disc herniation. Methods All patients were treated by operation after comfirmative diagnosis.
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。
Method: 72 cases (82 segments) with lumbar segmental instability were treated by PLIF with 3 kinds of interbody fusion techniques.
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。
The general belief today is that disc degeneration leads to segmental instability in the sagittal plane and may result in DS.
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