J Korean Med Sci.  2022 May;37(17):e137. 10.3346/jkms.2022.37.e137.

Effects of Local Anesthetics With or Without Steroids in High-Volume Transforaminal Epidural Blocks for Lumbar Disc Herniation: A Randomized, Double-Blind, Controlled Trial

• Chae JS
• Kim Wj
• Choi SH

• KMID: 2529704
• DOI: http://doi.org/10.3346/jkms.2022.37.e137

Abstract

Background
Lumbar transforaminal epidural block (TFEB) is an effective treatment modality for radicular pain due to lumbar disc herniation (LDH). The addition of steroids is more effective than local anesthetic alone in TFEBs for patients with LDH. Moreover, the efficacy of TFEBs has been reported to be positively correlated with the volume of injectate. We hypothesized that high-volume TFEBs without steroids effectively alleviate axial back and radicular pain associated with LDH. This study compared the efficacy of high-volume TFEBs with vs. without steroids for the management of the axial and radicular pain caused by LDH.
Methods
A total of 54 patients were randomly assigned to either group L or group D.Patients in group L received 8-mL injections of 0.33% lidocaine only. Patients in group D received 8-mL injections of 0.33% lidocaine with 5 mg of dexamethasone. The primary outcomes were pain intensity at baseline and 4 weeks after the procedure. The secondary outcomes included the change of functional disability between baseline and 4 weeks after the procedure, pain scores during injection, and adverse effects.
Results
Both groups showed a significant reduction in axial and radicular pain and improvement in the functional status at the outpatient visit 4 weeks after TFEB. However, there were no significant differences between the groups in terms of changes in back pain (10.00 [20.00] vs. 10.00 [22.50]; P = 0.896) or radicular pain (5.00 [20.00] vs.10.00 [12.50]; P = 0.871).
Conclusion
High-volume TFEBs with and without steroid administration yielded similar significant pain reductions and functional improvements among LDH patients 4 weeks after the procedure.

Keyword

Back Pain With Radiation; Herniated Disc; Injections; Epidural; Local Anesthetics; Nerve Block; Steroids

Figure

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  Fig. 1 Severity of nerve root compression. (A) Grade I, (B) Grade II, (C) Grade III, (D) Grade IV.

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  Fig. 2 CONSORT flow diagram.

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