Ligamentum Flavum thickness measurements

<p>This data file contains the data used in the manuscript</p> <p>"Ligamentum Flavum Hypertrophy in Asymptomatic and Chronic Low Back Pain Subjects" by Munns et al. Currently only identified as PONE-D-14-50818.</p

Ligamentum Flavum thickness measurements

This data file contains the data used in the manuscript "Ligamentum Flavum Hypertrophy in Asymptomatic and Chronic Low Back Pain Subjects" by Munns et al. Currently only identified as PONE-D-14-5081

Medial (A) and Lateral (B) ligamentum flavum thickness variation by lumbar level.

<p>Comparison between asymptomatic and chronic low back pain subjects segregated by spinal level. Error bars span one standard deviation. Asterisks denote significant differences with * <i>p</i> < 0.05. In (A) the symptomatic medial thickness tended to be larger than in the normal (L1: p = 0.0839, and L2: p = 0.0652, respectively). All other comparisons did not reach significance.</p

Mean (SD) thickness among asymptomatic and low back pain patients.

<p>Mean (SD) thickness among asymptomatic and low back pain patients.</p

Mean (SD) thickness values by age group.

<p>Mean (SD) thickness values by age group.</p

Ligamentum flavum thicknessby disc grade.

<p>Error bars span one standard deviation. (A) Medial: Asterisks denote significant differences as follows: * <i>p</i> < 0.05; and ** <i>p</i> < 0.001. Medial thickness in grade 3 tended to be larger than that in grade 1 (p = 0.0601). (B) Lateral: Asterisks denote significant differences as follows: * <i>p</i> < 0.05; ** <i>p</i> < 0.01, and *** <i>p</i> < 0.0001. Lateral thickness in grade 2 tended to be larger than that in grade 1 (p = 0.096). All other comparisons did not reach significance.</p

Screen capture of the image analysis program interface.

<p>(A) An original PD MR image. The region of interest box (shown as a white square) is selected for analysis. (B) Bilinear interpolation result showing an 800% enlarged image. Arrows indicate lateral thickness (LAT) and medial (MED) thickness.</p

Demographic distribution among asymptomatic and low back pain patients.

<p>Percentages are calculated with respect to the total number of subjects.</p