Effect of THR and TKR surgery on total leukocyte concentration. The points represent mean ± SD. p = <0.05 for THR and TKR, as determined by ANOVA and the Friedman tests respectively. p = 0.05 baseline vs day 1 postoperative THR, as determined by pairwise comparison testing; p = <0.05 baseline vs 5 minutes reperfusion, day 1 and day 3 postoperative TKR, as determined by the Wilcoxon test. (*, p < 0.05 compared to baseline).