Study on clinical efficacy of unilateral pedicle screw fixation and fusion assisted by Quadrant system in treatment of lumbar disc herniation

Objective To compare the clinical efficacy of unilateral pedicle screw fixation and fusion with bilateral pedicle screw fixation and fusion,and to provide reference for treatment of lumbar disc herniation. Methods The clinical data of 80 patients with lumbar disc herniation in this hospital during May 2011 to May 2013 were retrospectively analzed. They were divided into observation group and control group by different ways of operation. Patients in observation group received unilateral pedicle screw fixation and fusion assisted by Quadrant system,and patients in control group received bilateral pedicle screw fixation and fusion. The difference in efficacy,operating time,intraoperative blood loss and postoperative hospital stay were compared between these two groups. The evaluation of their therapeutic effect had been carried out by using Macnab and VAS scoring systems. Results In observation group,the average operating time was 102. 6 ± 8. 2 min with mean blood loss of 182. 7 ± 38. 6 ml; mean postoperative hospital stay was 13. 6 ± 2. 1 d; their difference was significant compared with those of control group. The effective rate of postoperative assessment for macnab was 92. 5%. The preoperative VAS scores were 1. 6 ± 2. 2 scores,and the mean postoperative VAS scores were 8. 6 ± 1. 7 scores,there was no significant difference between these two groups. The complication rate of observation group was 7. 5% which was lower than that of control group( 15. 0%),but their difference was not significant( P 0. 05). Conclusion In comparison with control group, patients in observation group have shorter operating time,less blood loss and shorter postoperative hospital stay,hence unilateral pedicle screw fixation and fusion assisted by Quadrant system is a reliable and effective therapeutic approach,and it is worthy to be applied for clinical reference.