Accessory obturator nerve

Plan of lumbar plexus (accessory obturator visible at bottom left).

The lumbar plexus and its branches (accessory obturator visible at bottom left).

Details
Identifiers
Latin| Nervus obturatorius accessorius
TA98| A14.2.07.019
TA2| 6538
FMA| 16488
Anatomical terms of neuroanatomy

[edit on Wikidata]

In human anatomy, the accessory obturator nerve is an accessory nerve in the lumbar region present in about 29% of cases.

It is of small size, and arises from the ventral divisions of the third and fourth lumbar nerves. Recent evidence support that this nerve arises from Dorsal divisions.

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.

## References[edit]

This article incorporates text in the public domain from page 955 of the 20th edition of Gray's Anatomy (1918)

## External links[edit]

* Diagram at nysora.com

* v
* t
* e

Nerves of the lumbosacral plexus

Lumbar plexus|

| iliohypogastric|

* lateral cutaneous branch
* anterior cutaneous branch

|

ilioinguinal|

* anterior scrotal ♂/labial ♀

genitofemoral|

* femoral branch
* genital branch

Lateral cutaneous |

* patellar

obturator|

* anterior
* cutaneous
* posterior
* accessory

femoral|

* anterior cutaneous branches
* saphenous
* infrapatellar
* medial crural cutaneous

sacral plexus|

| sciatic|

| common fibular |

* lateral sural cutaneous
* communicating branch
* deep fibular
* lateral terminal branch
* medial terminal branch
* dorsal digital
* superficial fibular
* medial dorsal cutaneous
* intermediate dorsal cutaneous
* dorsal digital

|

tibial|

* medial sural cutaneous
* medial calcaneal
* medial plantar (common plantar digital nerves
* proper plantar digital)
* lateral plantar (deep branch
* superficial branch
* common plantar digital
* proper plantar digital)

sural|

* lateral dorsal cutaneous
* lateral calcaneal

other|

* Muscular
* superior gluteal
* inferior gluteal
* lateral rotator group (to quadratus femoris
* to obturator internus
* to the piriformis)
cutaneous: posterior cutaneous of thigh (inferior cluneal
* perineal branches)
* perforating cutaneous

coccygeal plexus|

* pudendal
* inferior anal
* perineal
* deep
* posterior scrotal♂ / labial♀
* dorsal of the penis♂ / clitoris♀
* anococcygeal

Related|

* Nerve supply of the human leg

Portal:

* Anatomy

Authority control databases |

* Terminologia Anatomica

|

*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template