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Accessory obturator nerve

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Nerve: Accessory obturator nerve
Gray822
Plan of lumbar plexus. (Accessory obturator visible at bottom left.)
Gray823
The lumbar plexus and its branches. (Accessory obturator visible at bottom left.)
Latin n. obturatorius accessorius
Gray's subject #212 955
Innervates
From
To
MeSH [1]

The Accessory Obturator Nerve is present in about 29 per cent. of cases.

It is of small size, and arises from the ventral divisions of the third and fourth lumbar nerves.

It descends along the medial border of the Psoas major, crosses the superior ramus of the pubis, and passes under the Pectineus, where it divides into numerous branches.

One of these supplies the Pectineus, penetrating its deep surface, another is distributed to the hip-joint; while a third communicates with the anterior branch of the obturator nerve.

Occasionally the accessory obturator nerve is very small and is lost in the capsule of the hip-joint.

When it is absent, the hip-joint receives two branches from the obturator nerve.

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

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