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. 2022 Oct;31(10):2597-2606.
doi: 10.1007/s00586-022-07280-1. Epub 2022 Jun 24.

Application of electromagnetic navigation in endoscopic transforaminal lumbar interbody fusion: a cohort study

Hao Zhang #  1 , Derong Xu #  1 , Chao Wang  1 , Kai Zhu  1 , Jianwei Guo  1 , Chong Zhao  1 , Jialuo Han  1 , Houchen Liu  1 , Xuexiao Ma  2 , Chuanli Zhou  3
Affiliations

Application of electromagnetic navigation in endoscopic transforaminal lumbar interbody fusion: a cohort study

Hao Zhang et al. Eur Spine J. 2022 Oct.

Abstract

Study design: Clinical retrospective cohort study.

Objectives: To explore the application of the electromagnetic navigation system in Endo-TLIF.

Materials and methods: From May 2019 to March 2020, 76 patients with single-segment lumbar spondylolisthesis treated by electromagnetic navigation-assisted Endo-TLIF (NE group) and conventional Endo-TLIF (CE group) were enrolled in the study. Time of pedicle screw implantation, entire operation time, the number of intraoperative X-ray fluoroscopy exposures, total blood loss, incision length, ambulation time, accuracy of pedicle screws, complications, visual analog scale for back and leg pain, Oswestry Disability Index, Japanese Orthopedic Association score and postoperative fusion rates were recorded, respectively.

Results: There were no significant differences in preoperative demographics between the NE and CE groups (P > 0.05). The mean number of intraoperative X-ray fluoroscopy exposures, guidewires insertion, entire operation time, total blood loss and adjustment rate of screws in the NE group were significantly less compared with the CE group (P < 0.05, respectively). There were no significant differences in clinical parameters between the two groups at different time points in the follow-up period (P > 0.05). There was no statistical difference in fusion rates between the two groups. In addition, one case of cage subsidence was observed after surgery in the CE group.

Conclusion: Electromagnetic navigation systems could be applied throughout the entire surgical course and ameliorate the shortcomings of the conventional Endo-TLIF technique to reduce radiation exposure, improve accuracy, avoid repetitive operations and shorten surgery time and the required learning curve of the procedure.

Level of evidence i: Diagnostic: individual cross-sectional studies with consistently applied reference standard and blinding.

Keywords: Electromagnetic navigation; Endoscopic transforaminal lumbar interbody fusion; Intraoperative fluoroscopy; Lumbar spondylolisthesis; Operation time.

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