A cross-sectional study included 1276 RA outpatients showed the prevalence of dysfunctional LBP was 32.8%. Risk factors include BMI (OR 1.116; P < 0.001), onset age, disease duration of RA, MTX use, vertebral Fx, facet erosion, DAS-28CRP, pelvic tilt https://t.co/tg8cRImHdM