Abstract:Objective: To investigate the safety and effectiveness of new bone graft method in lumbar interbody fusion. Methods: A retrospective analysis was conducted on 119 cases of bone graft with new bone graft tube and traditional funnel bone graft combined with Cage from September 2018 to August 2019, new bone graft tube group (61 cases) and traditional funnel bone graft group (58 cases). The hospitalization data and postoperative clinical and imaging follow-up of the two groups were compared and analyzed. Results: All patients were followed up for more than 1 year. There was no significant difference in operation time, intraoperative blood loss, postoperative drainage volume and walking time between the two groups (P>0.05). The bone graft time of the new group was significantly faster than that of the traditional group, and the difference was statistically significant (P<0.05). There was no nerve and dura mater injury during the operation, and no infection occurred after operation. In the traditional group, there were 2 cases of bone leakage around the nerve root. After conservative treatment, the symptoms were relieved without surgical treatment. The VAS score, JOA, ODI and imaging indexes of lumbar spine were significantly improved after operation, and the differences were statistically significant (P<0.05). Bone fusion was achieved in both groups at the final follow-up. Conclusion: The application of new bone graft tube combined with cage bone graft can safely and efficiently complete lumbar posterior interbody fusion. Compared with the traditional funnel bone graft combined with intervertebral fusion cage, the new bone graft has the advantages of high efficiency and safety, which can be popularized and applied in clinic.