结论：棘突阶梯征对真性和假性腰椎滑脱具有鉴别诊断意义。
Conclusion: Spinous process step sign can help to differentiate true and pseudo-spondylolisthesis.
目的探讨棘突阶梯征在腰椎真性和假性滑脱时的不同表现及其诊断价值。
Objective To discuss the difference and its diagnostic value of spinous process step sign in true and pseudo-lumbar spondylolisthesis.
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