Fig. 5.
Pain expressed with a numeric rating scale at rest and during movement in the ropivacaine and saline groups. Zero represents no pain, and 10 represents the worst possible pain. For the box and whisker plots, the horizontal bars indicate the medians, the upper and lower limits of the boxes indicate the interquartile range, and the ends of the whiskers are the minimal and maximal values. +, ○, Δ, and × indicate the mean values.