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。
Results Vertebral canal volume recovered to close to or bigger than normal canal after half or whole combined interspinous for decompressing.
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