• Mark C Bicket, Joshua M Horowitz, Honorio T Benzon, and Steven P Cohen.
• Department of Anesthesiology, Critical Care and Pain Medicine, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA. Electronic address: mbicket@partners.org.
• Spine J. 2015 Feb 1;15(2):348-62.

Background ContextLow back pain is debilitating and costly, especially for patients not responding to conservative therapy and requiring surgery.PurposeOur objective was to determine whether epidural steroid injections (ESI) have a surgery-sparing effect in patients with spinal pain.Study Design/SettingThe study design was based on a systematic review and meta-analysis.MethodsDatabases searched included Cochrane, PubMed, and EMBASE. The primary analysis evaluated randomized controlled trials (RCTs) in which treatment groups received ESI and control groups underwent control injections. Secondary analyses involved RCTs comparing surgery with ESI, and subgroup analyses of trials comparing surgery with conservative treatment in which the operative disposition of subjects who received ESI were evaluated.ResultsOf the 26 total studies included, only those evaluating the effect of ESI on the need for surgery as a primary outcome examined the same patient cohort, providing moderate evidence that patients who received ESI were less likely to undergo surgery than those who received control treatment. For studies examining surgery as a secondary outcome, ESI demonstrated a trend to reduce the need for surgery for short-term (<1 year) outcomes (risk ratio, 0.68; 95% confidence interval, 0.41-1.13; p=.14) but not long-term (≥1 year) outcomes (0.95, 0.77-1.19, p=.68). Secondary analyses provided low-level evidence suggesting that between one-third and half of patients considering surgery who undergo ESI can avoid surgery.ConclusionsEpidural steroid injections may provide a small surgery-sparing effect in the short term compared with control injections and reduce the need for surgery in some patients who would otherwise proceed to surgery.Copyright © 2015 Elsevier Inc. All rights reserved.

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