With single incision laparoscopic surgery the use of the Triport™ system ensure that the port can be place under direct vision into the extraperitoneal space when the scope and two dissecting instruments can be safely inserted at the outset. In this way the extraperitoneal space can be dissected under direct vision. The balloon dissection is essentially a blind dissection even though the balloon distension is being observed by the scope, incorrect tissue planes can be entered ie the dissection can occur below the pre-peritoneal fascia exposing the nerves in the groin with the potential risks for nerve damage and entrapment. This is an argument that surgeons who practise transabdominal preperitoneal inguinal hernia repair use to justify their superior technique over the TEP repair because, in the TAPP repair, the peritoneum is carefully dissected free from and leaving the underlying preperitoneal fascia intact.