Fig. 6. Extensor postural thrust (EPT) (g) assessing the motor strength in the hind paw injection side, 15 h after the injection assessed using nonparametric tests (Kruskal-Wallis and Dunn tests). Results are expressed as median with 25th and 75th percentiles. Bupi = bupivacaine; carr = carrageenan; contra = contralateral (non–hind paw injection side); ipsi = ipsilateral (hind paw injection side); syst = systemic; TTX = tetrodotoxin. *P < 0.01  versus control group. §  P < 0.01  versus carrageenan group.