Comparative Study Between Onlay and Sublay Mesh in Treatment of Ventral Hernia

Ventral hernia can be categorized according to their characteristic into reducible, irreducible or incarcerated , strangulated and recurrant ventral hernia.

The cause of a primary ventral hernia ia s far from completely understood, but it is undoubtedly multifactorial. familial prediposing play a role with increasing evidance of connective tissue disorders, they are considered as a leading cause of abdominal surgery and account for 2-10% of all abdomenal wall hernias .

Clinical data show that 52% of incisional hernias occur within 6 months postoperative as a result of excessive tension and inadeqate healing of aprevious incision.

The history of prothetic repair in abdominal wall hernias began in 1844 within the use of silver wire coils placed in the floor of groin to induce an inflammatory fibrosis . meny prosthetic material have been tried in hernia repair, but the two most common in current use are polypropylene mesh and expanded polytetrafluoroethylene.

The repair of ventral hernia varies from primary closure, primary closure with an onlay mesh reinforcement, sublay mesh placement, and intraperitonial mesh placement. Primary closure techniques are usually performed for smal fascial defects less than 5 cm in the greaters diameter