Lateral incisional hernia classification

European Hernia Society classification of lateral abdominal wall hernias.

L1: Subcostal (between the costal margin and a horizontal line 3 cm above the umbilicus)
L2: Flank (lateral to the rectal sheath in the area 3 cm above and below the umbilicus)
L3: Iliac (between a horizontal line 3 cm below the umbilicus and the inguinal region)
L4: Lumbar (laterodorsal of the anterior axillary line)

Modified from: Muysoms FE, Miserez M, Berrevoet F, et al. Classification of primary and incisional abdominal wall hernias. Hernia 2009; 13:407.

Graphic 127927 Version 2.0