Fig. 1.

The mean CFU counts for each treatment group displayed on a logarithmic scale with standard error bars. All groups treated with antibiotics showed a significant decrease relative to the control group (p < 0.0003). The number of bacteria in the local gentamicin group was significantly lower than that in the systemic cefazolin group (p = 0.00005), and the number in the group treated with systemic cefazolin plus local gentamicin was significantly less than that in the local gentamicin group (p = 0.00006).