目的：比较后路椎体间融合(PLIF)联合后外侧融合(PLF)与单纯PLIF治疗腰椎退行性疾病的疗效。
Objective To study the clinical outcomes of posterior lumbar interbody fusion (PLIF) with and without posterolateral lumbar fusion (PLF) in treatment of degenerative lumbar disease.
目的：比较后路椎间植骨融合与横突间植骨融合在腰椎滑脱治疗上的临床疗效。
Objective: To compare the outcome of posterior interbody fusion versus intertransverse fusion for lumbar spondylolisthesis.
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