Clinical outcomes of unilateral translamina facet screw fixation vs bilateral pedicle screws fixation for lower lumbar vertebra diseases

English Keywords:Lumbar vertebra  Lamina facet screw  Pedicle screws  Fixation  Intervertebral fusion

English Abstract:

  【Abstract】 Objective：To investigate the surgical outcome of unilateral translamina facet screw fixation vs bilateral pedicle screws fixation after posterior decompression and intervertebral cage fusion for lower lumbar vertebra diseases.Method：51 patients with lower lumbar vertebra diseases who underwent the surgery were reviewed retrospectively，26 cases（group A） underwent unilateral translamina facet screw fixation by gunsight guiding, while the others（group B） underwent bilateral pedicle screws fixation.No significant difference was noted between two groups with respect to sex，age，duration，type of disease，site and degree of disease，and disc height of diseased segment.The clinical outcomes between 2 groups were compared.Result：All operations were performed successfully.No surgery-related complications was noted after operation.There were significant differences between two groups regarding to the length of incision，operation time，intraoperative blood loss，postoperative draining and cost of hospitalization.All cases were followed-up for an average of 19.5 months（range，12-24 months）.48 of 51 cases got bony fusion.No implant failure was noted during the follow-up，and JOA score at the final follow-up showed no difference between 2 groups（P＞0.05）.Conclusion：These two approaches had similar clinical outcomes for single-level lumbar degenerative disorders with no instability，compared with bilateral pedicle screw fixation，percutanous unilateral translamina facet screw fixation is minimal invasive and easy-handling.