Fig. 3From: Mapping of lumbar multifidus stiffness Quantification in ankylosing spondylitis with shear-wave elastographyBox plots used to compare the percentage change in LM muscle CSA on the left and right. Numbers are CSA percentages. The ends of the boxes represent the upper and lower quartiles, and the line separating the two areas indicates the median. Vertical lines indicate the full ranges of values in the dataBack to article page