Comparison Of Clinical Outcomes Of Posterior Lumbar Interbody Fusion And Posterolateral Fusion In The Treatment Of Low Degree Spondylolisthesis

Objective:the objective of this study is to compare the clinical outcomes and radiological results of posterior lumbar interbody fusion(PLIF) and posterolateral fusion(PLF)in the treatment of low degree spondylolisthesis. Methods:From October 2010 to October 2013,in the department of orthopaedics of our hospital,total 87 patients accepted surgical treatment, among them 50 patients who meet standard of inclusion criteria accepted surgical treatment.The operative method of PLIF group is posterior lumbar interbody fusion and laminectomy and pedicle screw fixation with or without reduction;The operative method of PLF group is posterolateral fusion and laminectomy and pedicle screw fixation with or without reduction.All the materials of bone grafting used in the process of operation in the both groups are autologous bone.All the patients accepted follow up lasting at least half year to 18monthes.We compare and evaluate the clinical and radiological results of tow groups by utilizing the excellent and good rate of ODI score, fusion rate, the average amount of bleeding, the average operation time, the average days of hospitalization,and the incidence of complications as the index of study.Results:The average follow up time is 12months. ALL the patients accepted follow up lasting at least half year to 18monthes.The distribution of lumbar stage in which the spondylolisthesis was happened in the PLIF group as follow:L3-4,6 patients,20%; L4-5,15 patients,50%;L5-S1,9 patients,30%.The distribution of lumbar stage in which the spondylolisthesis was happened in the PLF group as follow:L3-4,4 patients,20%; L4-5,11 patients,55%;L5-S1,5 patients,25%.Fusion rate, the average amount of bleeding, the average days of hospitalization,and the incidence of complications for PLIF group are higher than PLF group’s.There is no obvious deference between tow groups in the excellent and good rate of ODI score and the average operation time.Conclusion:We hold that clinical and radiological outcomes of PLIF group is superior of PLF group’s.But results of PLF group is also objective,so we think that when it need to be individualised design of surgical method for some special person on clinic, PLF is one of the important choice we can make.