Abstract:

Objective To investigate the safety and feasibility of a new lumbar fusion technique in the treat⁃ ment of lumbar spondylolysis. Methods Twenty patients with lumbar spondylolysis diagnosed in the First Affiliated Hospital of Guangxi University of Chinese Medicine from January 2021 to August 2021 were prospectively selected and randomly divided into group A（new type of lumbar fusion device group）and group B（PLIF group），with 10 patients in each group. Age，sex，body mass index（BMI），operative segment，operative time，intraoperative blood loss，ambulation time，wound length，intraoperative X ⁃ ray fluoroscopy times，postoperative complications，VAS score，JOA score and ODI score were recorded and compared in the two groups. Results There was no significant difference in terms of age，sex，BMI，surgical segment，preoperative VAS score，preoperative JOA score and preop⁃ erative ODI score between group A and B（P > 0.05）. Intraoperative blood loss，ambulation time，wound length， intraoperative X ⁃ ray fluoroscopy frequency and operation time in group A were significantly different from those in group B（P < 0.05）. There was statistically significant difference in VAS score of postoperative pain on the 1st and 7th day between group A and B（P < 0.05）. There was significant difference in JOA score and ODI score between group A and B on the 1st，and 14th day and 1 month after operation（P < 0.05）. Conclusion In the treatment of lumbar spondylolysis，the new type of lumbar fusion device has the advantages of less intraoperative blood loss， small wound and rapid recovery. At the same time，the symptoms are relieved obviously and the curative effect is sat⁃ isfactory. However，intraoperative X⁃ray fluoroscopy is more frequently needed when compared with PLIF technique. 

Key words:  , lumbar fusion； , lumbar spondylolysis； , prospective study