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Evaluating Bilateral Symptom Relief Following Parasagittal Interlaminar Epidural Steroid Injections

Year: 2025

Type: article

Abstract: Introduction: Interlaminar epidural steroid injections (ILESIs) using a parasagittal approach are frequently employed to manage lumbar radicular pain. The degree of contralateral symptom relief achieved with parasagittal ILESIs remains underexplored. This study aims to evaluate the short-term effectiveness of parasagittal ILESIs in providing ipsilateral and contralateral symptom relief in patients with bilateral lumbar radiculopathy and unilateral contrast spread. Methods: A retrospective review was conducted on 12 patients with bilateral lumbar radicular symptoms who underwent parasagittal ILESIs under fluoroscopic guidance. Patient-reported symptom relief was assessed for both ipsilateral and contralateral sides at a two-week follow-up visit or phone call. Descriptive statistics were used to evaluate patterns in symptom relief across the cohort. Results: All patients experienced significant relief on the ipsilateral side, with reported improvement ranging from 60% to 100% (mean: 84.6%). Contralateral relief was more variable, ranging from 0% to 90% (mean: 37.5%). No complications were reported. Conclusion: Parasagittal ILESIs provide more consistent and substantial relief of ipsilateral lumbar radicular symptoms. Contralateral relief is less predictable and may be limited by needle placement and the spread of medication. These findings support the use of parasagittal ILESIs in cases of unilateral or dominant-side radicular pain. For patients with significant bilateral symptoms, midline ILESIs or bilateral transforaminal injections may be more effective. Further prospective studies are warranted to identify predictors of bilateral relief and optimize procedural technique.

Source: Orthopedic Reviews

DOI: 10.52965/001c.143088

Authors: Jamal Hasoon, Christopher L Robinson, Omar Viswanath, Ivan Urits, Alan D Kaye

Institutions: The University of Texas Health Science Center at Houston, Brigham and Women's Hospital, Creighton University, SouthCoast Health, Louisiana State University Health Sciences Center Shreveport

Language: English

Topic: Spine and Intervertebral Disc Pathology

Subfield: Pathology and Forensic Medicine

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $1,200