• Pain physician · Sep 2017

    Observational Study

    Factors Associated with Successful Responses to Transforaminal Balloon Adhesiolysis for Chronic Lumbar Foraminal Stenosis: Retrospective Study.

    • Doo Hwan Kim, Seong-Sik Cho, Yeon-Jin Moon, Koo Kwon, Kunhee Lee, Jeong-Gil Leem, Jin-Woo Shin, Ji Hyun Park, and Seong-Soo Choi.
    • Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
    • Pain Physician. 2017 Sep 1; 20 (6): E841-E848.

    BackgroundRecently, transforaminal balloon adhesiolysis was introduced to manage patients with chronic radicular pain occurring with or without low back pain. However, the factors associated with successful responses to transforaminal balloon adhesiolysis are not known.ObjectiveTo evaluate the factors associated with successful responses to transforaminal balloon adhesiolysis for chronic lumbar spinal stenosis.Study DesignThis is a retrospective observational study.SettingA single pain clinic of tertiary medical center in Seoul, Republic of Korea.MethodsFrom January 2013 to December 2014, a retrospective review of 199 patients with chronic lumbar foraminal stenosis, who were scheduled for transforaminal balloon adhesiolysis, was performed. Patients were considered successful responders if they showed either of the following: 1) a decrease of more than 50% on the numerical rating scale or 2) a decrease of more than 30% on the numerical rating scale and improved functional status 3 months after transforaminal balloon adhesiolysis. Logistic regression analysis was performed to determine the factors associated with successful responses to this surgical procedure.ResultsThree months after the transforaminal balloon adhesiolysis, 49.4% of patients were considered successful responders. Multivariate logistic regression analysis showed that factors other than degenerative disc herniation were independently associated with successful responses 3 months after this surgical procedure (odds ratio = 0.327; 95% confidence interval = 0.129 - 0.827; P = 0.018).LimitationsThe definition of successful response used in this study differed from the ones used in previous studies; a different definition may have led to different results. Further, the effects of other factors (ballooning, drugs, and saline washes) could not be excluded from our study. In addition, the correct method of assessing functional status, the Oswestry Disability Index, could not be used in this study; hence, the final results may have been affected.ConclusionThese results suggest that transforaminal balloon adhesiolysis can successfully lead to improvement of symptoms in patients with chronic lumbar foraminal stenosis caused primarily by degenerative disc herniation.Institutional Review Board (IRB) approval number: 2016-0228.Key words: Balloon, epidural adhesiolysis, chronic pain, radicular pain, lumbar spine, foraminal stenosis, degenerative disc.

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