PURPOSE: To investigate the effectiveness and safety of epidural steroid injections in patients with lumbar spinal stenosis (LSS).
METHODS: We performed a search on the CENTRAL, Pubmed, Embase and Cochrane databases up to September 2014. We recovered 17 original articles, of which only 10 were in full compliance with the randomized controlled trial (RCT) criteria. These articles were reviewed in an independent and blinded way by two reviewers who were previously trained to extract data and score their quality by the criteria of the Cochrane Handbook (5.1.0).
RESULTS: We accepted ten studies with 1,010 participants. There is minimal evidence that shows that epidural steroid injections are better than lidocaine alone, regardless of the mode of epidural injection. There is a fair short-term and long-term benefit for treating spinal stenosis with local anesthetic and steroids.
CONCLUSIONS: This meta-analysis suggests that epidural steroid injections provide limited improvement in short-term and long-term benefits in LSS patients.
BACKGROUND: Epidural steroid injection is the most frequently performed pain procedure. This study of epidural steroid "control" injections aimed to determine whether epidural nonsteroid injections constitute a treatment or true placebo in comparison with nonepidural injections for back and neck pain treatment. METHODS: This systematic review with direct and indirect meta-analyses used PubMed and EMBASE searches from inception through October 2012 without language restrictions. Study selection included randomized controlled trials with a treatment group receiving epidural injections of corticosteroids or another analgesic and study control groups receiving either an epidural injection devoid of treatment drug or a nonepidural injection. Two reviewers independently extracted data including short-term (up to 12 weeks) pain scores and pain outcomes. All reviewers evaluated studies for eligibility and quality. RESULTS: A total of 3,641 patients from 43 studies were included in this systematic review and meta-analysis. Indirect comparisons suggested epidural nonsteroid were more likely than nonepidural injections to achieve positive outcomes (risk ratio, 2.17; 95% CI, 1.87-2.53) and provide greater pain score reduction (mean difference, -0.15; 95% CI, -0.55 to 0.25). In the very limited direct comparisons, no significant differences were noted between epidural nonsteroid and nonepidural injections for either outcome (risk ratio [95% CI], 1.05 [0.88-1.25]; mean difference [95% CI], 0.22 [-0.50 to 0.94]). CONCLUSION: Epidural nonsteroid injections may provide improved benefit compared with nonepidural injections on some measures, though few, low-quality studies directly compared controlled treatments, and only short-term outcomes (<=12 weeks) were examined.
BACKGROUND: Existing guidelines and systematic reviews provide inconsistent recommendations on epidural corticosteroid injections for sciatica. Key limitations of existing reviews are the inclusion of trials with active controls of unknown efficacy and failure to provide an estimate of the size of the treatment effect. PURPOSE: To determine the efficacy of epidural corticosteroid injections for sciatica compared with placebo. DATA SOURCES: International Pharmaceutical Abstracts, PsycINFO, MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, and CINAHL. STUDY SELECTION: Randomized, placebo-controlled trials assessing the efficacy of epidural corticosteroid injections in participants with sciatica. DATA EXTRACTION: Two independent reviewers extracted data and assessed risk of bias. Leg pain, back pain, and disability were converted to common scales from 0 (no pain or disability) to 100 (worst possible pain or disability). Thresholds for clinically important change in the range of 10 to 30 have been proposed for these outcomes. Effects were calculated for short-term (>2 weeks but <=3 months) and long-term (>=12 months) follow-up. DATA SYNTHESIS: Data were pooled with a random-effects model, and the GRADE (Grading of Recommendations Assessment, Development and Evaluation) approach was used in summary conclusions. Twenty-five published reports (23 trials) were included. The pooled results showed a significant, although small, effect of epidural corticosteroid injections compared with placebo for leg pain in the short term (mean difference, -6.2 [95% CI, -9.4 to -3.0]) and also for disability in the short term (mean difference, -3.1 [CI, -5.0 to -1.2]). The long-term pooled effects were smaller and not statistically significant. The overall quality of evidence according to the GRADE classification was rated as high. LIMITATION: The review included only English-language trials and could not incorporate dichotomous outcome measures into the analysis. CONCLUSION: The available evidence suggests that epidural corticosteroid injections offer only short-term relief of leg pain and disability for patients with sciatica. The small size of the treatment effects, however, raises questions about the clinical utility of this procedure in the target population. PRIMARY FUNDING SOURCE: None.
BACKGROUND: Intervertebral disc herniation, spinal stenosis, intervertebral disc degeneration without disc herniation, and post lumbar surgery syndrome are the most common diagnoses of chronic persistent low back and lower extremity symptoms, resulting in significant economic, societal, and health care impact. Epidural injections are one of the most commonly performed interventions in the United States in managing chronic low back pain. However the evidence is highly variable among different techniques utilized - namely interlaminar, caudal, and transforaminal - and for various conditions, namely - intervertebral disc herniation, spinal stenosis, and discogenic pain without disc herniation or radiculitis. Multiple systematic reviews conducted in the evaluation of the effectiveness of interlaminar epidural injections have been marred with controversy. Consequently, the debate continues with regards to the effectiveness, indications, and medical necessity of interlaminar epidural injections.
STUDY DESIGN: A systematic review of lumbar interlaminar epidural injections with or without steroids.
OBJECTIVE: To evaluate the effect of lumbar interlaminar epidural injections with or without steroids in managing various types of chronic low back and lower extremity pain emanating as a result of disc herniation or radiculitis, spinal stenosis, and chronic discogenic pain.
METHODS: The available literature on lumbar interlaminar epidural injections with or without steroids in managing various types of chronic low back pain with or without lower extremity pain was reviewed. The quality assessment and clinical relevance criteria utilized were the Cochrane Musculoskeletal Review Group criteria as utilized for interventional techniques for randomized trials and the criteria developed by the Newcastle-Ottawa Scale criteria for observational studies. The level of evidence was classified as good, fair, or limited based on the quality of evidence developed by the U.S. Preventive Services Task Force (USPSTF). Data sources included relevant literature identified through searches of PubMed and EMBASE from 1966 to December 2011, and manual searches of the bibliographies of known primary and review articles.
OUTCOME MEASURES: The primary outcome measure was pain relief (short-term relief = up to 6 months and long-term > 6 months). Secondary outcome measures were improvement in functional status, psychological status, return to work, and reduction in opioid intake.
RESULTS: Overall, 82 lumbar interlaminar trials were identified. All non-randomized studies without fluoroscopy and randomized trials not meeting the inclusion criteria were excluded. Overall, 15 randomized trials and 11 non-randomized studies were included in the analysis. Analysis was derived mainly from fluoroscopically-guided randomized trials and non-randomized studies. The evidence is good for radiculitis secondary to disc herniation with local anesthetics and steroids, fair with local anesthetic only; whereas it is fair for radiculitis secondary to spinal stenosis with local anesthetic and steroids, and fair for axial pain without disc herniation with local anesthetic with or without steroids, with fluoroscopically-guided epidural injections.
LIMITATIONS: The limitations of this study include that we were unable to perform meta-analysis for disc herniation, and the paucity of evidence for discogenic pain and spinal stenosis. Further, methodological criteria have been highly variable along with sample sizes. The studies were heterogenous.
CONCLUSION: The evidence based on this systematic review is good for lumbar epidural injections under fluoroscopy for radiculitis secondary to disc herniation with local anesthetic and steroids, fair with local anesthetic only; whereas it is fair for radiculitis secondary to spinal stenosis with local anesthetic and steroids, and fair for axial pain without disc herniation with local anesthetic with or without steroids.
Background: Low back pain with or without lower extremity pain is the most common problem among chronic pain disorders with significant economic, societal, and health impact. Epidural injections are one of the most commonly performed interventions in the United States in managing chronic low back pain. However the evidence is highly variable among different techniques utilized - namely interlaminar, caudal, transforaminal - and for various conditions, namely - intervertebral disc herniation, spinal stenosis, and discogenic pain without disc herniation or radiculitis. Study Design: A systematic review of lumbar interlaminar epidural injections with or without steroids. Objective: To evaluate the effect of lumbar interlaminar epidural injections with or without steroids in managing various types of chronic low back and lower extremity pain emanating as a result of disc herniation or radiculitis, spinal stenosis, and chronic discogenic pain. Methods: Review of the literature and methodologic quality assessment were performed according to the Cochrane Musculoskeletal Review Group Criteria as utilized for interventional techniques for randomized trials and the Agency for Healthcare Research and Quality (AHRQ) criteria for observational studies. The level of evidence was classified as Level I, II, or III based on the quality of evidence developed by the U.S. Preventive Services Task Force (USPSTF) for therapeutic interventions. Data sources included relevant literature of the English language identified through searches of PubMed and EMBASE from 1966 to November 2008, and manual searches of bibliographies of known primary and review articles. Results of analysis were performed for multiple conditions separately. Outcome Measures: The primary outcome measure was pain relief (short-term relief = up to 6 months and long-term > 6 months). Secondary outcome measures were improvement in functional status, psychological status, return to work, and reduction in opioid intake. Results: The available literature included only blind epidural injections without fluoroscopy. The indicated evidence is positive (Level II-2) for short-term relief of pain of disc herniation or radiculitis utilizing blind interlaminar epidural steroid injections with lacking of evidence with Level III for long-term relief for disc herniation and radiculitis. The evidence is lacking with Level III for short and long-term relief for spinal stenosis and discogenic pain without radiculitis or disc herniation utilizing blind epidural injections. Limitations: The limitations of this study include paucity of literature, lack of quality evidence, lack of fluoroscopic procedures, and lack of applicable evidence in contemporary interventional pain management practices. Conclusion: The evidence based on this systematic review is limited for blind interlaminar epidurals in managing all types of pain except for short-term relief of pain secondary to disc herniation and radiculitis. This evidence does not represent contemporary interventional pain management practices and also the evidence may not be extrapolated to fluoroscopically directed lumbar interlaminar epidural injections.
OBJECTIVES: To determine the current evidence to support guidelines for frequency and timing of epidural steroid injections (ESIs), to help determine what sort of response should occur to repeat an injection, and to outline specific research needs in these areas.
DATA SOURCES: A PubMed, Medline (EBSCO), and Cochrane library search (January 1971-December 2005), as well as additional references found from the initial search.
STUDY SELECTION: There were no studies that specifically addressed the objectives outlined. Eleven randomized controlled trials, 1 prospective controlled trial, and 2 prospective cohort studies were identified that included a protocol involving repeat epidural injections for radicular pain secondary to herniated nucleus pulposus or spinal stenosis. One qualitative survey was also identified. Five review articles were also included that discussed this topic.
DATA EXTRACTION: Data were extracted from clinical trials if they included the following: (1) protocols in clinical trials on ESIs that included repeat injections and the response required to trigger these injections, (2) any evidence given for establishing these protocols, and (3) similar studies that included only 1 injection. Specific mention of repeat ESIs and partial response that was mentioned in review articles was also included.
DATA SYNTHESIS: There is limited evidence to suggest guidelines for frequency and timing of ESIs or to help to define what constitutes the appropriate partial response to trigger a repeat injection. No study has specifically evaluated these objectives. Methodologically limited research suggests that repeat injections may improve outcomes, but the evidence is insufficient to make any conclusions.
CONCLUSIONS: There does not appear to be any evidence to support the current common practice of a series of injections. Recommendations for further research are made, including a possible study design.
BACKGROUND: Epidural injection of corticosteroids is one of the most commonly used interventions in managing chronic spinal pain. However, there has been a lack of well-designed randomized, controlled studies to determine the effectiveness of epidural injections. Consequently, debate continues as to the value of epidural steroid injections in managing spinal pain.
OBJECTIVE: To evaluate the effect of various types of epidural steroid injections (interlaminar, transforaminal, and caudal), in managing various types of chronic spinal pain (axial and radicular) in the neck and low back regions.
STUDY DESIGN: A systematic review utilizing the criteria established by the Agency for Healthcare Research and Quality (AHRQ) for evaluation of randomized and non-randomized trials, and criteria of Cochrane Musculoskeletal Review Group for randomized trials were used.
METHODS: Data sources included relevant English literature performed by a librarian experienced in Evidence Based Medicine (EBM), as well as manual searches of bibliographies of known primary and review articles and abstracts from scientific meetings within the last 2 years. Three reviewers independently assessed the trials for the quality of their methods. Subgroup analyses were performed among trials with different control groups, with different techniques of epidural injections (interlaminar, transforaminal, and caudal), with different injection sites (cervical/thoracic, lumbar/sacral), and with timing of outcome measurement (short- and long-term).
OUTCOME MEASURES: The primary outcome measure is pain relief. Other outcome measures were functional improvement, improvement of psychological status, and return to work. Short-term improvement is defined as 6 weeks or less, and long-term relief is defined as 6 weeks or longer.
RESULTS: In managing lumbar radicular pain with interlaminar lumbar epidural steroid injections, the evidence is strong for short-term relief and limited for long-term relief. In managing cervical radiculopathy with cervical interlaminar epidural steroid injections, the evidence is moderate. The evidence for lumbar transforaminal epidural steroid injections in managing lumbar radicular pain is strong for short-term and moderate for long-term relief. The evidence for cervical transforaminal epidural steroid injections in managing cervical nerve root pain is moderate. The evidence is moderate in managing lumbar radicular pain in post lumbar laminectomy syndrome. The evidence for caudal epidural steroid injections is strong for short-term relief and moderate for long-term relief, in managing chronic pain of lumbar radiculopathy and postlumbar laminectomy syndrome.
CONCLUSION: There is moderate evidence for interlaminar epidurals in the cervical spine and limited evidence in the lumbar spine for long-term relief. The evidence for cervical and lumbar transforaminal epidural steroid injections is moderate for long-term improvement in managing nerve root pain. The evidence for caudal epidural steroid injections is moderate for long-term relief in managing nerve root pain and chronic low back pain.
Epidural injections with or without steroids are used extensively in the management of chronic spinal pain. However, evidence is contradictory with continuing debate about the value of epidural steroid injections in chronic spinal syndromes. The objective of this systematic review is to determine the effectiveness of epidural injections in the treatment of chronic spinal pain. Data sources include relevant literature identified through searches of MEDLINE, EMBASE (Jan 1966- Mar 2003), manual searches of bibliographies of known primary and review articles, and abstracts from scientific meetings. Both randomized and non-randomized studies were included in the review based on the criteria established by the Agency for Healthcare Research and Quality (AHRQ). Studies were excluded from the analysis if they were simply review or descriptive and failed to meet minimum criteria. The results showed that there was strong evidence to indicate effectiveness of transforaminal epidural injections in managing lumbar nerve root pain. Further, evidence was moderate for caudal epidural injections in managing lumbar radicular pain. The evidence in management of chronic neck pain, chronic low back pain, cervical radiculopathy, spinal stenosis, and post laminectomy syndrome was limited or inconclusive. In conclusion, the evidence of effectiveness of transforaminal epidural injections in managing lumbar nerve root pain was strong, whereas, effectiveness of caudal epidural injections in managing lumbar radiculopathy was moderate, while there was limited or inconclusive evidence of effectiveness of epidural injections in managing chronic spinal pain without radiculopathy, spinal stenosis, post lumbar laminectomy syndrome, and cervical radiculopathy.
The purpose of the study was to assess the efficacy of epidural steroid injections for low-back pain. Data was obtained using computer-aided search of published randomized clinical trials and assessment of the methods of the studies. Twelve randomized clinical trials evaluating epidural steroid injections were identified. Data was extracted based on scores for quality of the methods, using 4 categories (study population, interventions, effect measurement, and data presentation and analysis) and the conclusion of the author(s) with regard to the efficacy of epidural steroid injections. Method scores of the trials ranged from 17 to 72 points (maximum 100 points). Eight trials showed method scores of 50 points or more. Of the 4 best studies (> 60 points), 2 reported positive outcomes and 2 reported negative results. Overall, 6 studies indicated that the epidural steroid injection was more effective than the reference treatment and 6 reported it to be no better or worse than the reference treatment. There appeared to be no relationship between the methodological quality of the trials and reported outcomes. In conclusion, there are flaws in the design of most studies. The best studies showed inconsistent results of epidural steroid injections. The efficacy of epidural steroid injections has not been established. The benefits of epidural steroid injections, if any, seem to be of short duration only. Future research efforts are warranted, but more attention should be paid to the methods of the trials.
To investigate the effectiveness and safety of epidural steroid injections in patients with lumbar spinal stenosis (LSS).
METHODS:
We performed a search on the CENTRAL, Pubmed, Embase and Cochrane databases up to September 2014. We recovered 17 original articles, of which only 10 were in full compliance with the randomized controlled trial (RCT) criteria. These articles were reviewed in an independent and blinded way by two reviewers who were previously trained to extract data and score their quality by the criteria of the Cochrane Handbook (5.1.0).
RESULTS:
We accepted ten studies with 1,010 participants. There is minimal evidence that shows that epidural steroid injections are better than lidocaine alone, regardless of the mode of epidural injection. There is a fair short-term and long-term benefit for treating spinal stenosis with local anesthetic and steroids.
CONCLUSIONS:
This meta-analysis suggests that epidural steroid injections provide limited improvement in short-term and long-term benefits in LSS patients.
