Fig. 1From: Usefulness of an accelerometer-based navigation system in bilateral one-stage total knee arthroplastySerum hemoglobin level obtained at preoperative, 24 h, 48 h and 72 h postoperative. Repeated measures ANOVA was used to compare between groups. Data are presented with mean ± 95% confidence interval. * = statistically significant (p = 0.02)Back to article page