Fig. 3. Time courses of mechanical (von Frey hair) pain thresholds to punctate stimuli within the injured site in trials of pretraumatic (A ) and posttraumatic injection of saline (control, left ) and lidocaine (right ). #, *P < 0.05 versus prevalue within the same trials and the trials of saline injection, respectively. ‡P < 0.05 versus posttraumatic lidocaine trials. Data are shown as medians with 1st and 3rd quartiles and 10th and 90th percentiles.