Sternal wound and there complication such as infection, Bruising and scar formation are known as major complication cardiac surgery with a high mortality rate up to 50%. Several approaches have been proposed for treatment of chronic sternal wounds in these patients. however, Underlying confounding factors such as old ages,diabetes mellitus, systemic hypoxia, atherosclerosis and malnutrition have main role against wound repairing. In this study investigators aimed to treatment of patients with open heart surgery and need to strict monitoring of sternal wound repair by Platelet Rich Fibrin.