JOURNAL ARTICLE

[Comparison of minimally invasive transforaminal lumbar interbody fusion between two approaches in treatment of single-segment lumbar spinal stenosis]

Rui Zhong, Runsheng Wang, Jianheng Liu, Zhenchuan Han, Wei Jiang, Qingzu Liu, Keya Mao
Chinese Journal of Reparative and Reconstructive Surgery 2019 July 15, 33 (7): 807-813
31297996

Objective: To compare the effectiveness of minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) with bilateral decompression via unilateral approach and bilateral decompression via bilateral approaches in the treatment of single-segment lumbar spinal stenosis.

Methods: Between February 2015 and January 2017, 70 cases of single-segment lumbar spinal stenosis were treated with MIS-TLIF. The bilateral decompression via unilateral approach (group U) was performed in 36 cases and bilateral decompression via bilateral approaches (group B) in 34 cases. There was no significant difference in age, gender, body mass index, disease duration, distribution of responsibility segments, preoperative visual analogue scale (VAS) score of low back pain and leg pain and Oswestry disability index (ODI) score ( P >0.05). The operation time, intraoperative blood loss, hospitalization stay after operation, complications related to operation, incidence of asymptomatic lateral root symptoms, VAS scores of low back pain and leg pain, and ODI score before and after operation were compared between the two groups. X-ray film and CT scan at 12 months after operation were used to assessted the intervertebral bony fusion.

Results: The operation time and intraoperative blood loss in group U were significantly less than those in group B ( P <0.05). There was no significant difference in hospitalization stay after operation between the two groups ( t =-0.311, P =0.757). During the operation, 1 case in group U and 2 cases in group B had dural tear. No screw placement related nerve injury or asymptomatic lateral root symptoms occurred after operation. The patients were followed up 24 to 38 months, with an average of 32.8 months in group U and 35.5 months in group B. The VAS scores of low back pain and leg pain at 2 days, 3, 6, and 12 months after operation were significantly lower than that before operation in the two groups ( P <0.05), and there was no significant difference between the two groups ( P >0.05). The ODI scores at 3, 6 and 12 months after operation were significantly lower than that before operation in the two groups ( P <0.05), and there was no significant difference between the two groups ( P >0.05). Radiographic examination showed interbody fusion at 12 months after operation in the two groups.

Conclusion: MIS-TLIF is safe and effective in the treatment of single-segment lumbar spinal stenosis with bilateral decompression via unilateral approach and bilateral decompression via bilateral approaches. Bilateral decompression via unilateral approach takes less operation time and has less intraoperative blood loss.

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