4.5 Article

One-year results from a randomized comparative trial of targeted steroid injection via epidural catheter versus standard transforaminal epidural injection for the treatment of unilateral cervical radicular pain

Journal

REGIONAL ANESTHESIA AND PAIN MEDICINE
Volume 46, Issue 9, Pages 813-819

Publisher

BMJ PUBLISHING GROUP
DOI: 10.1136/rapm-2021-102514

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Funding

  1. Epimed International

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The study evaluated the long-term effectiveness of cervical catheter-directed interlaminar epidural injection and cervical transforaminal steroid injection in reducing pain and disability in patients with refractory unilateral cervical radiculopathy for up to 1 year. Both interventions were effective in the majority of participants, with similar improvements in pain and disability outcomes.
Objectives The objective of this study was to evaluate the long-term effectiveness of catheter-directed cervical interlaminar epidural steroid injection with triamcinolone compared with cervical transforaminal steroid injection with dexamethasone for the treatment of refractory unilateral radicular pain. Design Prospective, randomized, comparative trial. Methods The primary outcome was the proportion of participants with >= 50% Numeric Rating Scale 'dominant pain' (the greater of arm vs neck) reduction from baseline. Secondary outcomes included >= 30% Neck Disability Index reduction and Patient Global Impression of Change response indicating 'much improved' or 'very much improved'. Results Data from 117 participants (55.6% women; 52.3 +/- 12.5 years of age; body mass index, 28.2 +/- 6.5 kg/ m2) were analyzed. The proportion of participants who experienced >= 50% pain reduction at 1 month, 3 months, and 6 months has been previously reported. At 1 year, 61.2% (95% CI, 46.9% to 73.9%) of the catheter group compared with 51.9% (95% CI, 38.4% to 65.2%) of the transforaminal group reported >= 50% 'dominant' pain reduction (p=0.35). The proportion of participants who experienced =30% improvement in Neck Disability Index score was 60.4% (95% CI, 45.9% to 73.3%) and 47.1% (95% CI, 33.7% to 60.8%) in the catheter and transforaminal groups (p=0.18). Patient Global Impression of Change improvement was similar in both groups: 60.5% (95% CI, 44.2% to 74.8%) and 57.5% (95% CI, 41.7% to 71.9%) of the catheter and transforaminal groups reported being 'much improved' or 'very much improved', respectively (p=0.79). Conclusion Both cervical catheter-directed interlaminar epidural injection and cervical transforaminal steroid injection were effective in reducing pain and disability in the majority of participants with refractory unilateral cervical radiculopathy for up to 1 year.

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