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. 2017 May 10;1(1):18-23.
doi: 10.1002/bjs5.3. eCollection 2017 Feb.

Development of incisional herniation after midline laparotomy

J J Harlaar  1 , E B Deerenberg  1 , R S Dwarkasing  2 , A M Kamperman  3 , G J Kleinrensink  4 , J Jeekel  4 , J F Lange  1
Affiliations

Development of incisional herniation after midline laparotomy

J J Harlaar et al. BJS Open. .

Abstract

Background: Incisional herniation is a common complication after abdominal surgery associated with considerable morbidity. The aim of this study was to determine whether incisional hernia is an early complication, in order to understand better the aetiology of incisional hernia formation.

Methods: This study involved the secondary analysis of a subset of patients included in a large RCT comparing small and large tissue bites (5 mm every 5 mm, or 1 cm every 1 cm) in patients scheduled to undergo elective abdominal surgery by midline laparotomy. The distance between the rectus abdominis muscles (RAM distance) was measured by standardized ultrasound imaging 1 month and 1 year after surgery. The relationship between the 1-year incidence of incisional hernia and the RAM distance at 1 month was investigated.

Results: Some 219 patients were investigated, 113 in the small-bites and 106 in the large-bites group. At 1 month after surgery the RAM distance was smaller for small bites than for large bites (mean(s.d.) 1·90(1·18) versus 2·39(1·34) cm respectively; P = 0·005). At 1 year, patients with incisional hernia had a longer RAM distance at 1 month than those with no incisional hernia (mean(s.d.) 2·43(1·48) versus 2·03(1·19) cm respectively; relative risk 1·14, 95 per cent c.i. 1·03 to 1·26, P = 0·015).

Conclusion: A RAM distance greater than 2 cm at 1 month after midline laparotomy is associated with incisional hernia. Closure with small bites results in a smaller distance between the muscles.

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Figures

Figure 1
Figure 1
Ultrasound images at 1 month after surgery from a 63‐year‐old man with a median laparotomy scar from xiphoid to umbilicus. a At the upper one‐third level of the laparotomy scar, bulging of intra‐abdominal fatty tissue through a large distance of 4·3 cm between the medial borders (indicated by + markers) of the rectus abdominis muscles can be seen. The patient developed an incisional hernia during follow‐up. b At the two‐thirds level of the laparotomy scar, a tight junction is visible between the medial borders of the rectus abdominis muscles in the midline. a,b The body mark (upper left) indicates the level and position (axially oriented) of the ultrasound probe (10–12 MHz, linear array transducer). A, rectus abdominis muscle
Figure 2
Figure 2
CONSORT flow diagram for the study14
See this image and copyright information in PMC

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