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Subcostal nerve

Assoc Prof Craig Hacking and Dr Henry Knipe et al.

The subcostal nerve can also be considered as the twelfth intercostal nerve. Some authors describe it as the first branch of the lumbar plexus.

Gross anatomy

The anterior division of the twelfth thoracic nerve, called the subcostal nerve, is larger than the other intercostal nerves. It runs along the lower border of the twelfth rib.

It may give off a communicating branch to the first lumbar nerve and the iliohypogastric nerve.

Anatomy: Thoracic


Article information

rID: 26648
System: Chest
Section: Anatomy
Synonyms or Alternate Spellings:
  • Twelfth intercostal nerve
  • Subcostal nerves

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Cases and figures

  • Figure 1: subcostal nerve
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  • Figure 2: lumbar plexus labeled
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