Short-term effect of Isobar dynamic stabilization system fixation combined with lumbar discectomy in patients with lumbar disc herniation

Abstract

Objective: To investigate the short-term effect of Isobar dynamic stabilization system fixation combined with lumbar discectomy in patients with lumbar disc herniation. Methods: From June 2015 to June 2017, 62 patients with lumbar disc herniation treated in the First Affiliated Hospital of Zhengzhou University were divided into control group and observation group according to the therapy. The 31 patients in the control group were treated with simple excision of nucleus pulposus and the 31 patients in the observation group were treated with Isobar dynamic stabilization system fixation combined with lumbar discectomy. The score of Oswestry disability index (ODI) and Japanese Orthopedic Association (JOA) score of low back pain, lumbar and adjacent stage activity, inflammatory factor levels[C reaction protein (CRP), interleukin 6 (IL-6) and tumor necrosis factor α (TNF-α)] were compared between the two groups before and after the operation and 6 months after the operation. The data were compared between the two groups with t test. Results: After the operation and 6 months after, the ODI scores of the two groups decreased and the JOA scores increased significantly (25.5±3.0, 27.5±3.2 vs 15.3±2.2 and 18.6±2.3, 23.3±2.9 vs 15.3±2.0), the ODI scores of the observation group was significantly lower than those in the control group; the JOA scores were significantly higher than those in the control group (t=0.04-10.19, all P<0.05). The operative time, hospital stay, intraoperative blood lose and complications rate in the observation group were all significantly lower than those in the control group. The total activity of lumbar vertebrae in the observation group was significantly higher than that in the control group after operation and 6 months after (t=37.67, 36.60, both P<0.05); the activity of adjacent segments in the observation group was significantly lower than that of the control group (t=9.28, 3.79, both P<0.05); the Pfirrmann grade was significantly lower than that in the control group (t=3.11, 5.05, both P<0.05). The levels of CRP, IL-6 and TNF-α in the two groups were lower than those before operation, and those were also significantly lower in the observation than the corresponding indexes in the control group (t=0.52-10.99, all P<0.05). Conclusion: Isobar dynamic stable system fixation combined with lumbar intervertebral disc resection can effectively improve the lumbar function and lumbar activity in patients with lumbar intervertebral disc herniation, and reduce the level of inflammation and relapse.