What are the anatomic features of the transversalis fascia and transversus abdominis in abdominal hernias?

Updated: Jul 01, 2021
  • Author: Assar A Rather, MBBS, MD, FACS; Chief Editor: John Geibel, MD, MSc, DSc, AGAF  more...
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The internal ring is bordered by the transversalis fascia circumferentially and deep, the arch of the internal oblique and transversus abdominis muscles superomedially, and the iliopubic tract inferolaterally. The course of the spermatic cord or round ligament through the abdominal wall defines the inguinal canal. Transversus abdominis aponeurosis and transversalis fascia combine to make the floor of the inguinal canal in 75% of persons (a minority have only transversalis fascia). The external oblique aponeurosis is anterior, and the inguinal ligament is inferior.

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