Purpose : To explore the CT characteristics and clinical significance of lumbar facet joints.

目的: 探讨腰椎关节突关节直面小角度的ct特征及其临床意义.

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Objective : To study the links between facet joints degenerative instability and lumbar spondylolisthesis.

目的: 观察椎小关节变性不稳定变与腰椎滑脱之间的关系.

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