Level 3	Recurrence is increased if overlap of the fascial defect by the prosthesis is inadequate.
	Large meshes with substantial overlap are associated with a low recurrence rate.
Level 4	Structures such as the falciform ligament, the ligamentum teres, and the prevesical fatty tissue require dissection to enable proper fixation and incorporation of the mesh in the area that has mesh overlap of the fascial defect.
	A larger overlap of the prosthesis (5 vs 3 cm) is necessary if sutures are not used and is more important for securing the overlap than the use of transfascial sutures for fixation of the mesh.
	Recurrence after incisional hernia repair appears to be due primarily to disregard for the principle that the whole incision (not only the hernia) must be repaired.