Surgical site infections are infections that occurs after surgery. Surgical site infection may involve skin, organs, or implanted materials or devices. Classification of surgical site infections include superficial incisional, deep incisional and organ or space surgical site infection. The most common causes of surgical site infections are invasive procedures that penetrate bacteria-laden body sites, such as the bowel. Some risk factors include age, gender, underlying health conditions, duration of the surgical procedure, nutritional status, obesity, smoking and proper use of antibiotics and intraoperative technique.