The internal spermatic fascia is the innermost of the three coverings of the spermatic cord. It is derived from the transversalis fascia and is picked up by the cord at the deep inguinal ring, so it wraps the ductus deferens, testicular vessels and nerves directly.
| Location | Around the spermatic cord from the deep inguinal ring to the testis. |
|---|---|
| Boundaries |
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| Contents |
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Forms the inner fascial tube around the contents of the spermatic cord.
During hernia repair, the internal spermatic fascia is opened to find an indirect hernia sac, which lies within it along the anteromedial side of the cord. It is also the layer around the cord structures in varicocele surgery and testicular cancer orchidectomy.
The peritoneal sac of an indirect hernia lies inside the internal spermatic fascia alongside the cord structures, and is separated from them during repair.
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