Fig. 4

The boxplots show the distributions of maximal tibial internal rotation angles for the intact CCL, CCLD and ECS groups in tibial internal rotation tests. The central lines and solid dots in the boxes represent the median and mean values, respectively; the edges of the boxes represent the first and third quartiles of the distributions; the cross marks represent outliers; and the ranges of the whiskers indicate the upper and lower extremes. Values with the same letters (a-d) differ significantly (p < 0.05)