• Pain Pract · Feb 2022

    Review

    The predictors for altered central pain modulation in individuals with non-specific chronic low back pain: A systematic review.

    • Manisha Subramanian and Prem Venkatesan.
    • Department of Physiotherapy, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal Hospitals, Bengaluru, India.
    • Pain Pract. 2022 Feb 1; 22 (2): 276-284.

    BackgroundResearch suggests that the prognosis of chronic nonspecific low back pain is poor when there is an alteration in the central pain processing pathway. This alteration creates a cascade of events, leading to poor outcomes. An overview of the predictors which increase this heightened pain perception is needed.ObjectivesTo review the studies identifying predictors for altered central main modulation in individuals with nonspecific chronic low back pain.DesignThis is a systematic review.MethodsPubMed, Cochrane Library, Science Direct, Scopus, Ovid, Embase, Web of Science, and CINAHL were searched from inception to 25th May 2021. Titles, abstracts, and full text were searched for eligible articles, which met the set criteria. Research articles that have employed outcome measure specific to altered central pain modulation and assessed at least one predictor were included.ResultsSix studies (n = 1389) were included in this review. The following five groups of predictors were identified: (1) psychological, (2) psychosocial (education, employment status, pain catastrophizing, and kinesiophobia), (3) sensory profile, (4) gender, and (5) others (illness and cognitive factors). Positive evidence of association was found for psychological predisposition and psychosocial (pain catastrophizing and employment and education status), whereas no evidence of association was found for kinesiophobia and cognitive factors.ConclusionThis review identified the predictors for altered central pain modulation in chronic nonspecific low back pain. This alteration could be responsible for the suspected poor outcomes even post treatment. Furthermore, the knowledge of predictors could potentially aid the therapist in planning a treatment regime when poor outcomes are suspected.© 2021 World Institute of Pain.

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