The application of limited decompression, fixation and fusion on the patients with degenerative lumbar spinal stenosis

Abstract

Objective To study the effectiveness of limited decompression,fixation and fusion on the patients with degenerative lumbar spinal stenosis. Methods 92 patients with degenerative lumbar spinal stenosis were ran- domly divided into two groups, the observation group （n = 46 cases ） who were operated through limited decompres- sion,fixation and fusion,and the control group（ n =46 cases） who were operated through the lamina resection decom- pression and internal fixation and interbody fusion. Two groups were observed about surgery time, blood loss and length of hospital stay. Follow-up for 6 months, the two groups of JOA score was compared. Results In the observation group, operative time, blood loss and length of hospital stay were shorter than that of the control group （ t = 6. 092, 7.114,3.714, all P 〈 0.05）. The average follow-up of six months, the two groups of preoperative JOA score and VAS scores were not significantly different （ all P 〉 0.05 ）. After 1 month, 3 months after operation, the JOA score was no significant difference between the observation group and the control group （ t = 0.810,0. 901, P 〉 0.05 ）. JOA score in the observation group after 6 monthe of operation was higher（ t = 4. 014, P 〈 0.05）. After 6 months, excellent rates were 78.3% in the observation group and 67.4% in the control group. The observation group was significantly higher than the control group （ X2 = 7. 210, P 〈0. 05）. Conclusion Limited decompression, fixation and fusion had a low trauma and significant effect for patients with degenerative lumbar spinal stenosis. Key words: Spinal stenosis ; Limited decompression