Fig. 6From: Application of a correlation between the lumbar Torg ratio and the area of the spinal canal to predict lumbar stenosis: a study of 420 postmortem subjectsThe percentage of specimens with Torg ratios less than the mean − 2SD at each lumbar level (X axis) that have lumbar canal stenosis i.e. canal area less than the mean − 2SD (Y axis) along with their respective 5 % error bars. A Torg ratio that is 2 SD below the mean predicts canal stenosis at L2, L3, L4, and L5Back to article page