Ilioinguinal nerve

The ilioinguinal nerve is a branch of the first lumbar nerve (L1). It separates from the first lumbar nerve along with the larger iliohypogastric nerve. It emerges from the lateral border of the psoas major just inferior to the iliohypogastric, and passes obliquely across the quadratus lumborum and iliacus. The ilioinguinal nerve then perforates the transversus abdominis near the anterior part of the iliac crest, and communicates with the iliohypogastric nerve between the transversus and the internal oblique muscle.

Variations

The size of this nerve is in inverse proportion to that of the iliohypogastric. Occasionally, it is very small, and ends by joining the iliohypogastric; in such cases, a branch from the iliohypogastric takes the place of the ilioinguinal, or the latter nerve may be altogether absent. == Ilioinguinal nerve block ==

Ilioinguinal nerve block

The ilioinguinal nerve is clinically important when considering an ilioinguinal or iliohypogastric nerve block. The indications for nerve block include anaesthesia for procedures involving the abdominal region such as inguinal herniorrhaphy or pain relief for procedures such as a caesarean section. Ropivacaine is an example of the anaesthetic which may be used for the block. ==Additional images==

Additional images

File:Gray824.png|Deep and superficial dissection of the lumbar plexus. File:Gray825and830.PNG|Cutaneous nerves of the right lower extremity. Anterior and posterior views. File:Gray826and831.svg|Cutaneous nerves of the right lower extremity. Anterior and posterior views. ==References==

Source: Wikipedia ↗

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