Efficacy of Corticosteroid Addition to Selective Nerve Root Block for Lumbar Radiculopathy: A Multicenter Prospective Cohort Study
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Le résumé fourni par la source
Introduction: The addition of corticosteroids to selective nerve root block (SNRB) is widely practiced for lumbar radiculopathy, yet robust evidence regarding its efficacy for functional outcomes remains limited. We evaluated whether adding corticosteroids to local anesthetic in SNRB relieves functional disability and improves quality of life in patients with lumbar radiculopathy. Methods: This multicenter, prospective cohort study enrolled 78 patients with single-level lumbar radiculopathy. Patients received fluoroscopy-guided SNRB with either corticosteroids (dexamethasone, betamethasone) plus 1% lidocaine (n=64) or lidocaine alone (n=14). The primary outcome was the Oswestry Disability Index (ODI) at 90 and 180 days. Secondary outcomes included visual analog scale (VAS) scores for leg pain, Japanese Orthopaedic Association Back Pain Evaluation Questionnaire (JOABPEQ), and minimal clinically important difference (MCID) achievement rates. Linear mixed-effects models were used for analysis. Results: The steroid group indicated significantly greater ODI improvement at 90 days (27.9 vs 47.1; mean difference, 19.2 points [95% confidence interval (CI), 6.8-31.6]; p=0.002) and 180 days (29.0 vs 44.1; mean difference, 15.1 points [95% CI, 2.3-27.9]; p=0.022), with large effect sizes (Cohen d>0.8). Significant improvements favoring corticosteroids were observed for VAS scores at 90 days (3.5 vs 5.7; p=0.018) and 180 days (3.7 vs 5.9; p=0.023) and multiple JOABPEQ domains. MCID achievement was significantly higher in the steroid group at 90 days (75.0% vs 33.3%; p=0.043); the number needed to treat was 2.4. Adverse event rates were similar in the groups, and no serious adverse events occurred. Benefits plateaued between 90 and 180 days. Conclusions: Adding non-particulate corticosteroids to SNRB significantly relieved functional disability and pain and improved quality of life in patients with lumbar radiculopathy, with the most pronounced group differences occurring at 90 days and sustained through 180 days. Clinically, the 90-day timepoint is optimal for evaluating treatment success and determining the need for alternative treatments.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Efficacy of Corticosteroid Addition to Selective Nerve Root Block for Lumbar Radiculopathy: A Multicenter Prospective Cohort Study
- Date Crossref
- 27/05/2026
- Éditeur
- Japanese Society for Spine Surgery and Related Research
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Nagoya University Department of Orthopaedics pays non établi dans la noticeUniversité ou école supérieure
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Kitasato University Department of Orthopaedic Surgery pays non établi dans la noticeUniversité ou école supérieure
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Wakayama Medical University Department of Orthopaedic Surgery pays non établi dans la noticeUniversité ou école supérieure
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Kameda Medical Center pays non établi dans la noticeÉtablissement de santé
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Kameda Daiichi Hospital Niigata Spine Surgery Center pays non établi dans la noticeÉtablissement de santé
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Osaka Metropolitan University Department of Orthopaedic Surgery pays non établi dans la noticeUniversité ou école supérieure
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Hamamatsu University School of Medicine Department of Orthopaedic Surgery pays non établi dans la noticeUniversité ou école supérieure
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Yamaguchi University Department of Orthopedic Surgery pays non établi dans la noticeUniversité ou école supérieure
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Chiba University Center for Frontier Medical Engineering pays non établi dans la noticeUniversité ou école supérieure
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Akita University Department of Orthopedic Surgery pays non établi dans la noticeUniversité ou école supérieure
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University of Yamanashi Department of Orthopaedic Surgery pays non établi dans la noticeUniversité ou école supérieure
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Keio University Department of Orthopaedic Surgery pays non établi dans la noticeUniversité ou école supérieure
Department of Orthopaedics — Nagoya University, Department of Orthopaedic Surgery — Kitasato University et Department of Orthopaedic Surgery — Wakayama Medical University, avec 9 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.