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|Nerve: Obturator nerve|
|Structures surrounding right hip-joint. (Obturator nerve labeled at upper right.)|
|Nerves of the right lower extremity. Front view.|
|Gray's||subject #212 953|
|Innervates||medial compartment of thigh|
|To||posterior branch of obturator nerve, anterior branch of obturator nerve|
- 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.
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.
The Obturator nerve is responsible for the sensory innervation of the skin of the medial aspect of the thigh.
- Articular branch
- Anterior branch of obturator nerve
- Posterior branch of obturator nerve
- cutaneous branch of the obturator nerve
- Memorial University of Newfoundland - Anatomy at MUN nerve/lumbnerv
- Memorial University of Newfoundland - Anatomy at MUN nerve/obtnerv
- Norman/Georgetown posteriorabdomen (posteriorabdmus&nerves)
- cutaneous field at neuroguide.com
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 As such, some of the information contained herein may be outdated.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.
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)
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