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(New page: {{bioPsy}} {{Infobox Nerve | Name = {{PAGENAME}} | Latin = nervus obturatorius | GraySubject = 212 | GrayPage = 953 | Image = Gray344.png | Caption ...)
 
 
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{{bioPsy}}
  
{{bioPsy}}
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{{Infobox Nerve |
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{{Infobox Nerve
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Name = {{PAGENAME}} |
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| Name = Obturator nerve
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Latin = nervus obturatorius |
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| Latin = nervus obturatorius
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GraySubject = 212 |
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| GraySubject = 212
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GrayPage = 953 |
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| GrayPage = 953
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Image = Gray344.png |
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| Image = Gray344.png
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Caption = Structures surrounding right [[hip-joint]]. (Obturator nerve labeled at upper right.) |
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| Caption = Structures surrounding right [[hip-joint]]. (Obturator nerve labeled at upper right.)
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Image2 = Gray827.png |
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| Image2 = Gray827.png
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Caption2 = Nerves of the right lower extremity. Front view. |
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| Caption2 = Nerves of the right lower extremity. Front view.
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Innervates = [[medial compartment of thigh]] |
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| Innervates = [[medial compartment of thigh]]
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BranchFrom = [[Lumbar plexus]] |
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| BranchFrom = [[Lumbar plexus]]
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BranchTo = [[posterior branch of obturator nerve]], [[anterior branch of obturator nerve]] |
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| BranchTo = [[posterior branch of obturator nerve]], [[anterior branch of obturator nerve]]
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MeshName = |
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| MeshName =
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MeshNumber = |
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| MeshNumber =
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DorlandsPre = n_05 |
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| DorlandsPre = n_05
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DorlandsSuf = 12566297 |
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| DorlandsSuf = 12566297
 
}}
  
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The '''obturator nerve''' arises from the ventral divisions of the second, third, and fourth [[lumbar nerves]]; the branch from the third is the largest, while that from the second is often very small.
 
   
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{{Main|Spinal nerves}}
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The '''obturator nerve''' is one of the [[spinal nerves]]. It arises from the ventral divisions of the second, third, and fourth [[lumbar nerves]]; the branch from the third is the largest, while that from the second is often very small.
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==Path==
 
It descends through the fibers of the [[Psoas major]], and emerges from its medial border near the [[brim of the pelvis]]; it then passes behind the [[common iliac vessels]], and on the lateral side of the [[hypogastric vessels]] and [[ureter]], which separate it from the ureter, and runs along the lateral wall of the [[lesser pelvis]], above and in front of the [[obturator vessels]], to the upper part of the [[obturator foramen]].
 
It descends through the fibers of the [[Psoas major]], and emerges from its medial border near the [[brim of the pelvis]]; it then passes behind the [[common iliac vessels]], and on the lateral side of the [[hypogastric vessels]] and [[ureter]], which separate it from the ureter, and runs along the lateral wall of the [[lesser pelvis]], above and in front of the [[obturator vessels]], to the upper part of the [[obturator foramen]].
   
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Here it enters the thigh, through the [[obturator canal]], and divides into an anterior and a posterior branch, which are separated at first by some of the fibers of the [[Obturator externus]], and lower down by the [[Adductor brevis]].
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Here it enters the thigh, through the [[obturator canal]], and divides into an anterior and a posterior branch, which are separated at first by some of the fibers of the [[Obturator externus]], and lower down by the [[Adductor brevis]].<br><br>
   
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==See also==
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==Innervation==
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* [[cutaneous branch of the obturator nerve]]
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The Obturator nerve is responsible for the sensory innervation of the skin of the medial aspect of the [[thigh]].
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It is also responsible for the motor innervation of the [[adductor]] muscles of the [[lower extremity]] ([[external obturator]], [[adductor longus]], [[adductor brevis]], [[adductor magnus]], [[gracilis]]).<br><br>
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Bilateral Neurectomy
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==Branches==
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* Articular branch
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* [[Anterior branch of obturator nerve]]
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* [[Posterior branch of obturator nerve]]
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* [[cutaneous branch of the obturator nerve]]<br><br><br><br>
   
 
==Additional images==
  
==Additional images==
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<gallery>
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Image:Gray837.png|Sacral plexus of the right side.
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</gallery>
 
<gallery>
  
<gallery>
 
Image:Gray236.png|Right hip bone. Internal surface.
  
Image:Gray236.png|Right hip bone. Internal surface.
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Image:Gray824.png|Deep and superficial dissection of the lumbar plexus.
  
Image:Gray824.png|Deep and superficial dissection of the lumbar plexus.
 
Image:Gray829.png|Dissection of side wall of pelvis showing sacral and pudendal plexuses.
  
Image:Gray829.png|Dissection of side wall of pelvis showing sacral and pudendal plexuses.
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Image:Gray837.png|Sacral plexus of the right side.
  
 
</gallery>
  
</gallery>
   
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* {{ViennaCrossSection|pelvis/pelvis-female-17}}
  
* {{ViennaCrossSection|pelvis/pelvis-female-17}}
 
* {{MUNAnatomy|nerve/lumbnerv}}
  
* {{MUNAnatomy|nerve/lumbnerv}}
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* {{MUNAnatomy|nerve/obtnerv}}
 
* {{NormanAnatomy|posteriorabdomen}} ({{NormanAnatomyFig|posteriorabdmus&nerves}})
  
* {{NormanAnatomy|posteriorabdomen}} ({{NormanAnatomyFig|posteriorabdmus&nerves}})
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* [http://courses.washington.edu/hubio553/atlas/207.html Image at UWash]
  
 
* [http://www.neuroguide.com/obturator.html cutaneous field at neuroguide.com]
  
* [http://www.neuroguide.com/obturator.html cutaneous field at neuroguide.com]
   
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{{Lumbosacral plexus}}
  
{{Lumbosacral plexus}}
   
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:de:Nervus obturatorius
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[[Category:Spinal nerves]]
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:fr:Nerf obturateur
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<!--
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[[de:Nervus obturatorius]]
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[[es:Nervio obturador]]
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[[fr:Nerf obturateur]]
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[[it:Nervo otturatorio]]
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[[ja:閉鎖神経]]
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-->
 
{{enWP|Obturator nerve}}
  
{{enWP|Obturator nerve}}

Latest revision as of 12:09, April 2, 2009

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Nerve: Obturator nerve
Gray344
Structures surrounding right hip-joint. (Obturator nerve labeled at upper right.)
Gray827
Nerves of the right lower extremity. Front view.
Latin nervus obturatorius
Gray's subject #212 953
Innervates medial compartment of thigh
From Lumbar plexus
To posterior branch of obturator nerve, anterior branch of obturator nerve
MeSH [1]
Main article: Spinal nerves

The obturator nerve is one of the spinal nerves. It arises from the ventral divisions of the second, third, and fourth lumbar nerves; the branch from the third is the largest, while that from the second is often very small.

Contents

PathEdit

It descends through the fibers of the Psoas major, and emerges from its medial border near the brim of the pelvis; it then passes behind the common iliac vessels, and on the lateral side of the hypogastric vessels and ureter, which separate it from the ureter, and runs along the lateral wall of the lesser pelvis, above and in front of the obturator vessels, to the upper part of the obturator foramen.

Here it enters the thigh, through the obturator canal, and divides into an anterior and a posterior branch, which are separated at first by some of the fibers of the Obturator externus, and lower down by the Adductor brevis.

InnervationEdit

The Obturator nerve is responsible for the sensory innervation of the skin of the medial aspect of the thigh.

It is also responsible for the motor innervation of the adductor muscles of the lower extremity (external obturator, adductor longus, adductor brevis, adductor magnus, gracilis).

Bilateral Neurectomy

BranchesEdit

Additional imagesEdit

External linksEdit

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.

Nerves of lower limbs and lower torso: the lumbosacral plexus

lumbar plexus: iliohypogastric - ilioinguinal - genitofemoral (femoral branch/lumboinguinal, genital branch) - lateral cutaneous of thigh (patellar) - obturator (anterior, cutaneous, posterior, accessory) - femoral (anterior cutaneous branches, saphenous)

sacral/coccygeal plexus: to quadratus femoris - to obturator internus - to the piriformis - superior gluteal - inferior gluteal - posterior cutaneous of thigh (inferior cluneal, perineal branches)
sciatic: tibial (medial sural cutaneous, sural, medial calcaneal, medial plantar, lateral plantar) - common fibular (lateral sural cutaneous, deep fibular, superficial fibular, medial dorsal cutaneous, intermediate dorsal cutaneous)

pudendal plexus: perforating cutaneous - pudendal (dorsal of the penis/clitoris, inferior anal, perineal and posterior scrotal/labial) - anococcygeal

cutaneous innervation of the lower limbs

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