• Eur Spine J · Dec 2024

    Quantitative magnetic resonance imaging of paraspinal muscles for assessing chronic non-specific low back pain in young adults: a prospective case-control study.

    • Muqing Luo, Yinqi Liu, Weiyin Vivian Liu, Mengtian Ma, Yunjie Liao, Suping Chen, and Kun Zhang.
    • Department of Radiology, The First Hospital of Hunan University of Chinese Medicine, Changsha, 410007, Hunan Province, China.
    • Eur Spine J. 2024 Dec 1; 33 (12): 454445544544-4554.

    PurposeThis study aimed to investigate the application of quantitative magnetic resonance imaging of paraspinal muscles in assessing the young CNLBP with unilateral symptom.MethodsThis prospective study enrolled 107 young individuals with unilateral symptomatic CNLBP (56 cases) and a normal cohort (51 cases). All subjects underwent conventional lumbar sequences, T2 mapping, and IDEAL-IQ scans at 3T. T2 values and fat fraction (FF) of bilateral multifidus (mid-levels of L2-L5 vertebrae) and erector spinae (mid-levels of L1-L4 vertebrae) were measured. CNLBP severity, Japanese Orthopedic Association (JOA) score, and Visual Analogue Scale (VAS) score were recorded. Wilcoxon signed-rank tests were used to compare parameter differences between painful and non-painful sides in the case group. Mann-Whitney U tests were employed to evaluate differences between the case and normal group. Logistic regression analysis was conducted to identify predictive factors and to establish a combined model.ResultsIn the case group, erector spinae FF values (L4 level), erector spinae T2 values (L1, L2, and L4 levels), and multifidus T2 values (L4 and L5 levels) were higher on the painful side (P<0.05). Multifidus T2 values (L5 level) and FF values (L2-L5 levels) were higher in the case group compared to the normal group (P<0.05). The optimal performance in differentiating young CNLBP was the combination of L5 level multifidus T2 value with FF (AUC = 91.81%). Negative correlation existed between T2 values and FF of multifidus at L5 level and JOA scores (r=-0.41, P < 0.05), and positive correlation with VAS scores (r = 0.46, P < 0.05).ConclusionThe combination of T2 value and FF may provide deeper insights into the pathological alterations of paraspinal muscles in young CNLBP, providing an important imaging basis for clinical judgment and preventive treatment of non-painful side in unilateral symptomatic patients.© 2024. The Author(s).

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