“…Collagen constitutes approximately one -third of the total protein content of any organism and is the predominant structural protein of the aponeurosis, where it is organized in fibres, whose chemical-physical characteristics render them particularly resistant to traction. Within the abdominal wall, as in other tissue, damaged collagen fibers are repaired through a process of proliferation and remodelling [7]. The aim of MMP proteolytic activity is to permit the passage of macrophages and fibroblasts across hydrolysed collagen fibres, leading to tissue repair where necessary.…”