Fig. 2

a The VR simulation re-indicates one scene of the laparoscopic sigmoid colectomy by a medial approach. Asterisk indicates a green line is the planned cutting line. b This VR simulation makes it possible to replicate the membrane structure. Regarding the cutting procedure, you can successfully cut the membrane only when the left hand creates sufficient tension in the tissue. c A clear cut cannot be achieved and burning will occur with insufficient tension. Burned tissue turns black. When you create too strong tension, the tissue will tear. You get force feedback if you create tension on the tissue