There were marked relative relationship between the decline rate of vertebral canal volume and of cross section area (P<0.01).
经统计学处理，椎管容积下降率与椎管横截面积下降率的相关性具有非常显著性意义（P<0 .0 1）。
Results Vertebral canal volume recovered to close to or bigger than normal canal after half or whole combined interspinous for decompressing.
结果半环式或全环式椎管直接减压，椎管容积恢复接近或大于正常椎管。
Results Vertebral canal volume recovered to close to or bigger than normal canal after half or whole combined interspinous for decompressing.
结果半环式或全环式椎管直接减压，椎管容积恢复接近或大于正常椎管。
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