Posterior single segment fusion or non-fusion in treatment of lumbar spinal disease:a comparative study

[Objective]To compare the treatment effects of posterior single segment fusion and non-fusion in lumbar spinal disease.[Methods]A total of 126 cases of degenerative lumbar spinal disorder were treated with Coflex(group non-fusion) and PLIF(group fusion),and were followed up for over 2 years.The clinical effect was evaluated by VAS and ODI.ROM of lumbar segments was measured by X-ray film.[Results]Postoperative VAS and ODI showed significant improvements than that of pre-operation in terms of pain decrease and lumbar function in both 2 groups.There was no significant difference between 2 groups(P0.05).The motion range of L3、4,L4、5,L5S1 improved significantly in non-fusion group(P0.05).The motion range of L3、4 improved significantly in fusion group(P0.05),more improvement was found at 2 year follow-up(P0.05).The motion range was lost in L4、5,the motion range of L5S1 improved significantly at 3 month follow-up(P0.05).At 2 years postoperative follow up,the improvement in fusion group was better than that of non-fusion group,with significant difference(P0.05).[Conclusion]Both fusion and non-fusion fixation have satisfactory effects in treatment of degenerative lumbar spinal disorder.Non-fusion fixation has less influence on ROM of lumbar segment and could reduce adjacent segment degeneration.