Objective To research the relationship of lumbosacral Angle with lumbar spinal stability and degenerative lumbar spondylolisthesis.

目的探讨腰骶角与腰椎稳定性、变性脊柱滑脱之间的关系。

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The experimental results showed:1. The multiple bilateral laminectomy for lumbar spinal stenosis could destroy significantly the lumbar spinal stability (P<0. 01).

并通过生物力学方法评价其对腰椎稳定性的影响。实验结果表明：（1）多椎板切除减压术明显破坏腰椎的稳定性（p<0.01）。

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Conclusion Decompressive laminectomy could reduce the pressure of lumbar spinal stenosis and improve the stability of lumbar vertebrae.

目的探讨保留棘突韧带复合结构椎管潜行减压治疗退变性腰椎管狭窄症的疗效。

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Conclusion Decompressive laminectomy could reduce the pressure of lumbar spinal stenosis and improve the stability of lumbar vertebrae.

目的探讨保留棘突韧带复合结构椎管潜行减压治疗退变性腰椎管狭窄症的疗效。

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