Fig. 4
From: A preliminary multicenter evaluation of endoscopic sublay repair for ventral hernia from China
Partition of the abdominal wall. Region I: retro-rectus space above the linea semicircularis. Region II: Bogros space. Region III: Retzius space. Region IV: the space between the linea alba and the peritoneum, which is separated by the umbilicus. Line A: the outer edge of the posterior sheath inside of the neurovascular bundle and the transversus abdominis behind the sheath. Line B: the inner margin of the posterior sheath. Line C: the boundary between Retzius space and Bogros space