• Arch Phys Med Rehabil · Dec 2014

    Factors associated with pain reduction after transforaminal epidural steroid injection for lumbosacral radicular pain.

    • Zachary McCormick, Daniel Cushman, Ellen Casey, Cynthia Garvan, David J Kennedy, and Christopher Plastaras.
    • Department of Physical Medicine and Rehabilitation, Northwestern McGaw Medical Center/The Rehabilitation Institute of Chicago, Chicago, IL. Electronic address: zmccormi@gmail.com.
    • Arch Phys Med Rehabil. 2014 Dec 1;95(12):2350-6.

    ObjectiveTo identify demographic and clinical factors associated with pain improvement after a lumbosacral transforaminal epidural steroid injection (TFESI) for the treatment of radicular pain.DesignRetrospective cohort study.SettingOutpatient center.ParticipantsAdults (N=188) who underwent a fluoroscopically guided TFESI for lumbosacral radicular pain.InterventionsNot applicable.Main Outcome MeasuresPain reduction from preinjection to 2-week follow-up was measured by visual analog scale (VAS). Patients were grouped by those who experienced no pain relief or worsened pain (≤0%), pain relief but <50% relief (>0%-<50%), or significant pain relief (≥50%) on the VAS.ResultsThe mean duration of pain prior to injection was 45.8±81 weeks. The mean time to follow-up after TFESI was 20±14.2 days. Significantly more patients who experienced ≥50% pain relief at follow-up reported higher preinjection pain on the VAS (P=.0001) and McGill Pain Inventory Questionnaire (P=.0358), reported no worsening of their pain with walking (P=.0161), or had a positive femoral stretch test (P=.0477). No significant differences were found between VAS pain reduction and all other demographic and clinical factors, including a radiologic diagnosis of disk herniation versus stenosis or other neural tension signs on physical examination.ConclusionsGreater baseline pain on the VAS and McGill Pain Inventory, a history of a lack of worsening pain with walking, and a positive femoral stretch test predict a greater likelihood of pain reduction after TFESI for lumbosacral radicular pain at short-term follow-up. Greater baseline pain on the McGill Pain Inventory and a lack of worsening pain with walking predict a magnitude of >50% pain reduction.Copyright © 2014 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.

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