• Pain Med · Aug 2013

    Clinical effectiveness of single lumbar transforaminal epidural steroid injections.

    • Timothy J Kaufmann, Jennifer R Geske, Naveen S Murthy, Kent R Thielen, Jonathan M Morris, John T Wald, Felix E Diehn, Kimberly K Amrami, Rickey E Carter, Randy A Shelerud, Ralph E Gay, and Timothy P Maus.
    • Department of Radiology, Mayo Clinic, Rochester, Minnesota 55905, USA.
    • Pain Med. 2013 Aug 1; 14 (8): 1126-33.

    ObjectivesTo assess the clinical effectiveness of single lumbar transforaminal epidural steroid injections (TFESIs) in subjects with radicular pain with or without radiculopathy.DesignRetrospective observational series.SettingSingle academic radiology pain management practice.SubjectsTwo thousand twenty-four subjects undergoing single lumbar TFESIs at the L4-5, L5-S1, or S1 neural foramina.Methods / Outcome MeasuresSubjects were assessed with a pain numerical rating scale (NRS, 0-10) and Roland-Morris disability questionnaire (R-M, 23-point Deyo modification) prior to TFESI and at 2 weeks and 2 months follow-up. Successful pain relief (responders) was defined as either ≥50% reduction in NRS or pain 0/10; functional success was defined as ≥40% reduction in R-M score.ResultsThere were statistically significant (P < 0.0001) reductions in mean NRS and R-M scores at 2 weeks and 2 months postinjection. For NRS, 40.9% were responders at 2 weeks and 45.6% at 2 months. For R-M, 31.9% were responders at 2 weeks and 41.3% at 2 months. The proportion of responders for NRS and R-M was higher when there was <3 months of pain (odds ratio 2-month NRS = 2.42 [95% confidence interval: 1.82, 3.24], odds ratio 2-month R-M = 2.61 [1.96, 3.48]). For subjects with <3 months of pain, the proportion of responders was 62.4% (56.5, 68.3%) for NRS and 59.3% (53.3, 65.3%) for R-M scores.ConclusionsThis retrospective observational study suggests TFESIs are clinically effective in the treatment of lumbar radicular pain. Subjects with a shorter duration of pain are more likely to achieve a successful outcome.Wiley Periodicals, Inc.

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