Why are some hernias described as being complex? how challenging are they to repair?

Due to associated: Problems , obesity , multiple systemic diseases , draining fistulas due to intestines eroding through grafts , lacking tissue planes for to free the bowel , lack of fascia to repair , lack of suitable material in presence of infection.And on challenging but gratifying if succeeds with out getting additional implications

Complex: When lumped together, hernia disease represents abdominal wall holes in a variety of locations that are various sizes on different patients. There are also many repair techniques of utilizing different suture ; mesh materials, and we are learning more about all this everyday, so its always changing. Here's an example of a hernia that is difficult to fix.