Clinical Efficacy Analysis Of Unilateral And Bilateral Pedicle Screw Fixation With Laminectomy And Intervetrebral Fusion In Treating Lumbar Degenerative Disease

Objective: To observe the clinical efficacy of unilateral and bilateral pedicle screwfixation with laminectomy and intervertebral fusion for lumbar degenerative disease,analyze the biomechanical stability of lumbar unilateral pedicle screw fixation withlaminectomy and intervertebral fusion.Methods: From March2011to October2012，66cases of patients with lumbardegenerative disease which have complete data were retrospectively analyzed.Among them,32cases underwent unilateral pedicle screw fixation,while34cases experienced bilateralpedicle screw fixation,as all cases were treated with laminectomy and intervertebralfusion.It is aimed to make a comparison between the operation time,intraoperativebleeding volume and postoperative drainage volume of the two sets.Besides,according tothe JOA(Japanese Orthopaedic Association)treatment evaluation score and VAS (VisualAnalogy Scale) score,it is aimed to evaluate lumbar function improvement before and aftertreatment,calculate the improvement ratio, and observe the intervertebral fusion conditionof the follow-up.Results:The operation time,intraoperative bleeding volume and postoperativedrainage volume between two groups showed statistical significance(P<0.05).After anaverage of6months follow-up(range3-9months）for66patients,we have not foundpedicle screws looseness or fracture,Cage shift or sinkage.JOA and VAS scores betweentwo groups at postoperation showed remarkable statistical significance compared withpreoperative counterparts(P<0.01).Conclusion:Unilateral and bilateral pedicle screw fixation with laminectomy and intervertebral fusion can both make lumbar obtain reliable stability, clinical symptomsimprovement is significant, and intervertebral fusion effect is certain.Compared with thelatter, the former surgical method is simple,less trauma and can shorten the operation time,reduce the blood loss and the complications.