Jing Luan1, Qi Wang2, Dan Lyu1, Zhun Wang1, Yongjin He1

1Department of Pain Management, Tianjin First Central Hospital, Tianjin, China
2Department of Anesthesiology, Tianjin First Central Hospital, Tianjin, China

Keywords: Far lateral disc herniation, selective nerve root block, transforaminal endoscopic spine system.


Objectives: This study aims to compare the clinical effectiveness of transforaminal endoscopic spine system (TESSYS) technique combined with selective nerve root block (SNRB) in treating patients with far lateral lumbar disc herniation (FLDH) and patients with central or paracentral herniation (C/PDH).

Patients and methods: Between June 2015 and June 2019, a total of 204 patients (80 males, 124 females; mean age: 62.3±5.4 years; range, 51 to 66 years) with a herniated disc were included. Of these, 22 consecutive adult patients with FLDH formed the FLDH group, while 182 patients with C/PDH formed the C/PDH group. Considering that FLDH was a rare type of LDH and occurred outside the spinal canal, the patients with LDH in the spinal canal (C/PDH) were selected as the controls in our study. All cases received ultrasound-guided SNRB to identify the diseased disc and treated by the TESSYS technique. Data including demographics, duration of operation, duration of hospital stay, surgical cost, complications, Visual Analog Scale (VAS) scores for the back and leg, and Oswestry Disability Index (ODI) scores and the modified MacNab criteria were analyzed.

Results: The FLDH group presented the similar clinical outcomes and costs with the C/PDH group. No significant differences in the VAS score, ODI score, and Macnab score were observed between the groups (p>0.05 for all). Both groups showed the significantly improved postoperative VAS scores on Day 3, at 1, 3, 6, and 12 months compared to baseline. The postoperative ODI scores at 6 and 12 months were also significantly improved (p<0.05). At the final follow-up at 12 months, the FLDH group showed the MacNab criteria rating excellent and good of 81.8% and C/PDH group showed 84.62%.

Conclusion: The FLDH patients presented the comparable clinical effectiveness with C/PDH patients. Based on these findings, the TESSYS technique combined with ultrasound-guided SNRB for FLDH is safe and feasible with caution, although the risk of nerve root injury may be worried.

Citation: Luan J, Wang Q, Lyu D, Wang Z, He Y. Comparable effectiveness of transforaminal endoscopic spine system technique combined with selective nerve root block between far lateral lumbar disc herniation and central or paracentral herniation. Jt Dis Relat Surg 2022;33(3):513-520.

Ethics Committee Approval

The study was approved by the Ethics Committee of Tianjin First Central Hospital (date: 20190813, no: 2019N100KY). The study was conducted in accordance with the principles of the Declaration of Helsinki.

Author Contributions

Provided input into the concept and design of the study, and provided the materials: J.L., Y.H.; Collected and assembled the data: J.L., Q.W., Z.W.; Analyzed the data: J.L., Q.W.; Carried out literature review: Z.W., J.L., Q.W., D.L.; Wrote the article: J.L., Q.W., D.L.; All authors have critically revised the article, read and approved the final version at the time of submission.

Conflict of Interest

The authors declared no conflicts of interest with respect to the authorship and/or publication of this article.

Financial Disclosure

The study is funded by the Science and Technology project of Tianjin Municipal Health Commission (ZC20094).