A hernia that appears at the site of a previous surgery is known as ventral or incisional hernia.Its very important to get the hernia repaired early on because it can widen and may be extremely difficult to repair when it gets complicated.In most cases these hernias are repaired with the use of a mesh.what is a mesh and how does it work?Its a sterile woven material made from synthetic plastic like material called polypropylene.It is soft and flexible to allow it to easily conform to the body movement.Mesh can be in the form of a patch and are available in various measurements and can be cut to size depending on the repair technique used.It goes under or over the defect or can be in the form of a plug that goes inside the hole and sutured in place. Mesh acts as a scaffolding for the new growth of patients own tissue and helps to ensure outstanding healing and recovery. It allows a flexible scar tissue so that the abdominal wall may move more naturally.Donated human allograft are also used for complicated hernia repairs. A GI consult is needed if u have an abnormal protrusion seen at the site of previous surgical site at rest or on straining.