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Murine Distal Colostomy, A Novel Model of Diversion Colitis in C57BL/6 Mice
Published on: July 12, 2018
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Abdominal rectus muscle atrophy and midline shift after colostomy creation
Lucas Timmermans1, Eva B Deerenberg1, Sven M van Dijk1
1Department of Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands.
Surgery
|March 4, 2014
Summary
Colostomy creation can lead to abdominal wall changes, including left abdominal rectus muscle atrophy and midline shift. These alterations may increase the risk of incisional hernia (IH) after surgery.
Area of Science:
- Abdominal wall biomechanics
- Surgical outcomes research
- Medical imaging analysis
Background:
- Incisional hernia (IH) is a common complication after abdominal surgery.
- Parastomal hernias are a known risk factor for IH following midline laparotomy.
- The underlying biomechanical changes predisposing to IH after colostomy are not fully understood.
Purpose of the Study:
- To investigate the biomechanical changes in the abdominal wall after colostomy creation.
- To test the hypothesis that midline shift and abdominal rectus muscle (ARM) atrophy contribute to increased IH risk.
Main Methods:
- Retrospective analysis of patients undergoing end-colostomy between 2004-2011.
- Comparison of pre- and postoperative computed tomography (CT) scans for midline shift assessment using virtual reality.
- Measurement of left ARM thickness at various levels relative to the colostomy.
Main Results:
- A statistically significant mean shift of the midline to the right was observed post-colostomy (P = .043).
- A thinner left abdominal rectus muscle (ARM) was identified caudal to the colostomy site.
- CT scans were available for 77 patients, with 30 having pre- and postoperative imaging.
Conclusions:
- Colostomy creation induces significant alterations in abdominal wall structure and mechanics.
- Left ARM atrophy and midline shift are consequences of colostomy creation.
- These observed changes provide a potential explanation for the elevated incidence of incisional hernias post-colostomy.
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