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External Spermatic Fascia

fascia spermatica externa

The external spermatic fascia is the outermost covering of the spermatic cord and testis. It is a continuation of the external oblique aponeurosis and is picked up by the cord as it passes through the superficial inguinal ring.

Anatomical Data

Boundaries & Contents

LocationAround the spermatic cord and testis from the superficial inguinal ring into the scrotum.
Boundaries
  • Continuous with the external oblique aponeurosis at the superficial inguinal ring
  • Lies deep to the dartos fascia in the scrotum
  • Lies superficial to the cremasteric fascia
Contents
Biomechanics

Function & Actions

Forms the outer covering of the spermatic cord and testis.

Clinical Relevance

Clinical Notes

Surgeons identify this layer when opening the inguinal canal or the scrotum, as the first of the three cord coverings. In inguinal hernia repair the superficial ring formed by its origin is assessed for width. An indirect hernia sac lies inside this and the two deeper coverings.

Pathology

Common Injuries & Conditions

Indirect Inguinal Hernia

A hernia that follows the spermatic cord through the inguinal canal, lying within the external spermatic fascia and the other cord coverings as it descends toward the scrotum.

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