RESEARCH ARTICLE


Significant Efficacy of Tramadol/Acetaminophen in Elderly Patients with Chronic Low Back Pain Uncontrolled by NSAIDs: An Observational Study



Toshihiro Imamura*
Department of Orthopaedic Surgery, Japan Labour Health and Welfare Organization, Kyushu Rosai Hospital, 1-1 Sonekitamachi, Kitakyushu, Fukuoka, 800-0296, Japan


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© Toshihiro Imamura; Licensee Bentham Open.

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the Department of Orthopedic Surgery, Japan Labour Health and Welfare Organization, Kyushu Rosai Hospital, 1-1 Sonekitamachi, Kitakyushu, Fukuoka, 800-0296, Japan; Tel: +81-93-471-1121; Fax: +81-93-473-0627; E-mail: imamurat.orth@kyushuh.rofuku.go.jp


Abstract

Chronic low back pain (LBP) is a common condition and is generally treated using non-steroidal anti-inflammatory drug (NSAID); however, chronic NSAID use can decrease renal function. Tramadol, a weak opioid agonist, may improve chronic LBP and disability, while avoiding adverse effects such as gastrointestinal and renal toxicity. However, few studies have evaluated the short-term efficacy of opioids in Asian patients with chronic LBP. In this study, 24 patients with chronic LBP unresponsive to NSAIDs (10 men, 14 women; mean age, 65.1 ± 12.1 years) were prescribed tramadol/acetaminophen (37.5 mg/325 mg; four tablets daily) for 1 month. Then, the following parameters were assessed at baseline and after 1 week and 1 month of treatment: leg pain and LBP (Visual Analog Score [VAS]); activity of daily life (Roland-Morris Disability Questionnaire [RDQ]); and disability (Oswestry Disability Index [ODI]). Leg pain resolved within 1 week (p = 0.00093); however, LBP was relieved only at 1 month (p = 0.00034). The mean RDQ (p = 0.015) and ODI (p = 0.0032) scores were improved at 1 month. A total 41.6% of patients reported nausea and floating sensation beginning tramadol/acetaminophen treatment, and 12.5% (four patients) discontinued treatment as a result. LBP did not improve in 25% of patients administered tramadol/acetaminophen. Because this was an observational study, rather than a comparative study, further investigation is needed to evaluate the long-term efficacy of tramadol/acetaminophen in elderly patients with chronic LBP unresponsive to NSAIDs.

Keywords: Acetaminophen, ADL, chronic kidney disease, low back pain, musculoskeletal chronic pain, Oswestry Disability Index, Roland-Morris Disability Questionnaire, tramadol.