What is the pathophysiology of an abdominal spigelian hernia?

Updated: Jul 01, 2021
  • Author: Assar A Rather, MBBS, MD, FACS; Chief Editor: John Geibel, MD, MSc, DSc, AGAF  more...
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A spigelian hernia occurs through a defect in the spigelian fascia, defined by the lateral edge of the rectus abdominis at the semilunar line (from costal arch to pubic tubercle). Abnormal orientation of the semilunar and semicircular lines, along with obesity, increased intra-abdominal pressure, aging, and rapid weight loss, leads to the production of spigelian hernias.

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