Definition To understand the potential complications of an ilioinguinal block you must first understand the anatomy.  The abdominal wall layers consist of skin, a superficial fatty layer of subcutaneous tissue (Camper fascia), a deep membranous layer of subcutaneous tissue (Scarpa fascia), deep fascia, external oblique muscles, fascia, internal oblique muscles, fascia, transversus abdominus muscles, transversalis […]