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  • Title: The Value of Short-Term Pain Relief in Predicting the Long-Term Outcome of Lumbar Transforaminal Epidural Steroid Injections.
    Author: Joswig H, Neff A, Ruppert C, Hildebrandt G, Stienen MN.
    Journal: World Neurosurg; 2017 Nov; 107():764-771. PubMed ID: 28838872.
    Abstract:
    BACKGROUND: A previous report demonstrated predictive power of short-term leg pain relief after lumbar transforaminal epidural steroid injections for 1-month treatment response. The question whether the long-term response could be similarly predicted remained unanswered. METHODS: A prospective cohort of 57 patients who underwent a transforaminal epidural steroid injection for sciatica secondary to a lumbar disc herniation was followed for 24 months. Leg and back pain on the visual analog scale, health-related quality of life using the 12-Item Short Form Survey, and functional outcome using the Oswestry Disability Index were assessed. Responders were defined as not receiving any additional invasive treatment after a single injection. Patients who underwent a second injection or surgery were defined as treatment failures (nonresponders). RESULTS: At 24 months, 31 (54.4%) patients were responders, and 26 (45.6%) were nonresponders. Nonresponders left follow-up at 1 month (n = 9), 3 months (n = 9), 6 months (n = 6) and 12 months (n = 2). No patients were injected again or operated on between the 12- and 24-month follow-up. Responders at 24 months had significantly lower visual analog scale leg pain (P < 0.05) than nonresponders starting from the second week after TFESI and better 12-Item Short Form Survey scores and less disability on the Oswestry Disability Index. CONCLUSIONS: Most patients with a symptomatic lumbar disc herniation who opt for a second injection or surgery do so within the first 6 months. Reliable prediction of the long-term treatment response based on short-term pain relief is not possible.
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