Why and how incisional hernias develop?
During conventional open surgery an opening is made in abdominal layers which are closed by stitches. With time scar tissue forms creating a bond between the two sides of the previous incision. It is never as strong as normal tissue and can tear and. When the scar tissue gives way an incisional hernia, peritoneum protrudes, forming the sac. The content of intestine can pulled inside the sac. Wound infection after surgery is a common cause of incisional hernia because infection interferes with the normal healing process, result is a weaker scar. Obesity, Smoking, malnutrition, deficiency of vitamins chronic cough after operation, weight lifting after operation also contribute to hernias because they also interfere in normal tissue healing.
